### 11th Standard CBSE Physics Study material & Free Online Practice Tests - View and download Sample Question Papers with Solutions for Class 11 Session 2019 - 2020 CBSE

#### 11th CBSE Thermal Properties of Matter Model Question Paper - by Girish - Chennai Aug 20, 2019 - View & Download

• 1)

At about 4°C, a certain amount of water has maximum

• 2)

Dimensional formula of specific heat capacity is

• 3)

The top of a lake gets frozen at a place where the surrounding air is at a temperature of - 20°C. Then

• 4)

The scale on a steel meter rod is calibrated at 20°C. What will be the error in the reading of 50 ern at 27°C? Take, a = 1.2 x 10.5 °C-1

• 5)

The rates of cooling of two different liquids put in exactly similar calorimeters and kept in identical surroundings are the same if

#### 11th CBSE Physics Mechanical Properties of Fluids Model Question Paper - by Girish - Chennai Aug 19, 2019 - View & Download

• 1)

The Bernauli's Theorem is based on the conservation of:

• 2)

Two small drops of mercury, each of radius R, coalesce to form a single large drop. The ratio of the total surface energies before and after the change is:

• 3)

For a ball falling in a liquid with constant velocity, ratio of resistance force due to the liquid to that due to gravity is

• 4)

Application of Bernaull's Theorem can be seen in

• 5)

At which of the following temperature, the value of surface tension of water is minimum?

#### 11th Standard CBSE Physics Mechanical Properties of Solids Model Question Paper - by Girish - Chennai Aug 13, 2019 - View & Download

• 1)

Dimensional formula of stress is same as that of

• 2)

Young's modulus of a material has the same unit as

• 3)

Which of the following is not a unit of Young's modulus?

• 4)

A spring of force constant k is cut into two equal parts. The force constant of each part is

• 5)

Young's modulus of a wire depends on

#### 11th Standard CBSE Physics Gravitation Model Question Paper - by Girish - Chennai Aug 05, 2019 - View & Download

• 1)

A satellite is orbiting the earth. If its distance from the earth is increased, its

• 2)

A satellite of mass m revolves around the earth of radius R at a height x from its surface. If g is the acceleration due to gravity on the surface of the earth, the orbital speed of the satellite is

• 3)

If a particle is fired vertically upwards from the surface of earth and reaches a height of 6400 km, the initial velocity of the particle is (assume R = 6400 km and g = 10 ms-2)

• 4)

If M is the mass of the earth and R its radius, the ratio of the gravitational acceleration and the gravitational constant is

• 5)

A satellite is launched into a circular orbit of radius R around the earth. A second satellite launched into an orbit of radius 1.01 R. The time period of the second satellite is larger than that of the first one by approximately

#### 11th Standard CBSE Unit 7 System of Particles and Rotational Motion Model Questions Paper - by Girish - Chennai Aug 03, 2019 - View & Download

• 1)

A couple produces a:

• 2)

A cylindrical solid of mass M has raidus R and length L. Its moment of inertia about a generator is:

• 3)

A man of mass M is standing at the centre of a rotating turn table rotating with an angular velocity w. The man holds two 'dumb bells' of mass M/4 each in each of his two hands. If he stretches his arms to a horizontal position, the turn table acquires a new angular velocity w' where

• 4)

A particle performing uniform circular motion has angular momentum L. If its angular frequency is doubled and its kinetic energy halved, then the new angular momentum is

• 5)

A loaded spring gun of mass M fires a 'shot' of mass m with a velocity $\vartheta$ at an angle of elevation $\theta$. The gun is initially at rest on a horizontal frictionless surface. After firing, the centre of mass of the gun-shot system

#### 11th CBSE Physics Unit 6 Work,Energy and Power Model Question Paper - by Girish - Chennai Jul 31, 2019 - View & Download

• 1)

A body is initially at rest. It undergoes one-dimensional motion with constant acceleration. The power delivered to it at time t is proportional to

• 2)

A body is moving unidirectionally under the influence of a source of constant power. Its displacement in time t is proportional to

• 3)

Equal masses (m each) are attached at the two ends of a string passing over two pulleys. Another mass is attached at the centre of the string. In order that there is no sag in the string, this mass should be

• 4)

A heavy stone is thrown from a cliff of height h with a speed v. The stone will hit the ground with maximum speed if it is thrown

• 5)

The work done by the external forces on a system equals the change in

#### 11th CBSE Physics Unit 5 Laws of Motion Important Question Paper - by Girish - Chennai Jul 30, 2019 - View & Download

• 1)

If the tension in the cable supporting an elevator is equal to the weight of the elevator, the elevator may

• 2)

A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m.
Force P is applied at one end of the rope. The force which the rope exerts on the block is:

• 3)

A force of 200 N is required to push a car of mass 500 kg slowly at constant speed on a level road. If a force of 500 N is applied, the acceleration of the car (in m S-2) will be

• 4)

Water is poured from a height of 10m into an empty barrel at the rate of 1 litre per second. If the weight of the barrel is 10 kg, the weight indicated at time t = 60 s will be

• 5)

The physical quantity which is equal to the change in momentum of a body is known as

#### 11th Standard CBSE Physics Unit 4 Motion in a Plane Important Question Paper - by Girish - Chennai Jul 27, 2019 - View & Download

• 1)

If $\overrightarrow { { a }_{ 1 } }$ and $\overrightarrow { { a }_{ 2 } }$ are two non collinear unit vectors and if $\left| \overrightarrow { { a }_{ 1 } } +\overrightarrow { { a }_{ 2 } } \right|$ =$\sqrt{3}$, then the value of $\left( \overrightarrow { { a }_{ 1 } } -\overrightarrow { { a }_{ 2 } } \right) .\left( 2\overrightarrow { { a }_{ 1 } } +\overrightarrow { { a }_{ 2 } } \right)$ is

• 2)

The sum of magnitudes of two forces acting at a point is 18 units and the magnitude of their resultant is 12 units. The resultant is at 90° with the force of the smaller magnitude. The magnitude of the individual forces is

• 3)

From the top of a tower of height 40 m, a ball is projected upwards with a speed of 20 m/ s at an angle of elevation of 30°. The ratio of the total time taken by the ball to hit the ground to its time of flight (time taken to come back to the same elevation) is (Take g = 10 m/s2)

• 4)

A boy aims a gun at a target from a point, at a horizontal distance of 100 m. if the gun can impart a horizontal velocity of 500 ms-1 to the bullet, the height above the target where he must aim his gun, in order to hit it is (Take g = 10 ms=-2)

• 5)

At the top of the trajectory of a projectile, the directions of its velocity and accelerations are

#### 11th Standard CBSE Physics Unit 3 Motion in a Straight Line Important Question Paper - by Girish - Chennai Jul 26, 2019 - View & Download

• 1)

The displacement x of a particle varies with time according to the relation x=$\frac { a }{ b }$(1-e-bt). Then

• 2)

The displacement of an object at any instant is given by x = 30 + 20 t2, where x is in metres and t in seconds.
The acceleration of the object will be

• 3)

Which of the following is not a vector quantity?

• 4)

When the distance travelled by a body is directly proportional to the time, the body is said to have a

• 5)

In case of a moving body

#### 11th CBSE Physics Unit 2 Units and Measurements Important Question Paper - by Girish - Chennai Jul 25, 2019 - View & Download

• 1)

The SI units of magnetic field is

• 2)

The dimensions of energy per unit volume are the same as those of

• 3)

The SI units of the universal gravitational constant G are

• 4)

'Parsec' is the unit of:

• 5)

The density of a cube is measured by measuring its mass and the length of its sides. If the maximum errors in the measurement of mass and length are 3% and 2% respectively, then the maximum error in the measurement of density is

#### 11th CBSE Physics Unit 1 Physical World Important Question Paper - by Girish - Chennai Jul 24, 2019 - View & Download

• 1)

• 2)

Who gave Universal Law of Gravitation?

• 3)

What is the relative magnitude of electromagnetic force with respect to strong nuclear forces?

• 4)

Who discovered scattering of light?

• 5)

Which scientific principle is steam engine based on:

#### CBSE 11th Physics HOTs Model Exam Questions and Answers - by Bala Dec 29, 2018 - View & Download

• 1)

Name the two domains of Physics.

• 2)

Write the dimensional formula of wavelength and frequency of a wave.

• 3)

Can a body have zero velocity and finite acceleration?

• 4)

A body is projected with speed u at an angle $\theta$ to the horizontal to have maximum range. What is the velocity at the highest point?

• 5)

What is the coordinates for precession?

• 1)

Name two major groups of Physics.

• 2)

How do we make the choice of a standard / unit of measurement?

• 3)

Draw x-t graph for positive acceleration.

• 4)

Galileo, in his book 'Two new sciences', stated that for elevations which exceed or fall short of ${ 45 }^{ \circ }$by equal amounts, the ranges are equal, Prove this statement.

• 5)

What is couple?

#### Class 11 CBSE Physics Model Question and answers NCERT - by Bala Dec 29, 2018 - View & Download

• 1)

How much stronger nuclear force is compared to electromagnetic force?

• 2)

Name some physical quantities which are dimensionless.

• 3)

Draw v-t graph for non-uniform accelerated motion.

• 4)

Can there be two vectors where the resultant is equal to either of them?

• 5)

A wheel of moment of inertia 50 kg-m2 about its own axis is revolving at a rate of 5 revolutions per second. What is its angular momentum?

#### Oscillation Important Questions from CBSE 11th Physics - by Bala Dec 15, 2018 - View & Download

• 1)

What is the period of each of the function, sec$\omega$ and cosec $\omega$ t?

• 2)

What would be the effect on the time period if the amplitude of a simple pendulum increases?

• 3)

What is the force equation of a SHM?

• 4)

A simple pendulum is transferred from earth to the surface of moon. How will its time period be affected?

• 5)

The piston in the cylinder head of a locomotive has a stroke (twice the amplitude) of 1.0 m. If the piston executes simple harmonic motion with an angular frequency of 200 rad/min, then what is its maximum speed?

#### 11th CBSE Physics Kinetic Theory Important Question Paper - by Bala Dec 03, 2018 - View & Download

• 1)

What is the value of $\gamma$ to monoatomic gas ?

• 2)

When air is pumped into a cycle tyre the volume and pressure of the air in the tyre both are increased." What about Boyle's law in this case?

• 3)

If a gas is heated, its temperature increases. On the basis of kinetic theory of gases, explain.

• 4)

If a molecule having N atoms has k number of constraints, how many degree of freedom does the gas possess?

• 5)

If there are f degrees of freedom with n moles of a gas, then find the internal energy possessed at a temperature T.

#### 11th Physics Oscillation Important Question Paper - by Bala Dec 01, 2018 - View & Download

• 1)

What is the period of each of the function, sec$\omega$ and cosec $\omega$ t?

• 2)

A body executes SHM with aperiod of 11/7 s and an amplitude of 0.025 m. What is the maximum value of acceleration?

• 3)

What is the force equation of a SHM?

• 4)

If the length of a simple pendulum is increased by 25% then what is the change in its time period?

• 5)

State the condition when motion of a particle can be an SHM.

#### 11th CBSE Physics Waves Important Question Paper - by Bala Nov 30, 2018 - View & Download

• 1)

What is the nature of water waves produced by a motorboat sailing in water ?

• 2)

Show that when a string fixed at its two ends vibrates in 1 loop, 2 loops, 3loops and 4loops, the frequencies are in the ratio 1:2:3:4.

• 3)

A hospital uses an ultrasonic scanner to locate tumours in a tissue. What is the wavelength of sound in the tissue in which the speed of sound os 1.7 kms-1? The operating frequency of the scanner is 4.2 MHz.

• 4)

A sonometer wire is vibrating in resonance with a tuning fork. Keeping the tension applied same, the length of the wire is doubled. Under what conditions would the tuning fork still be in resonance with the wire?

• 5)

What frequency of the sound you hear coming directly from the siren?

#### 11th Physics Revision Model Question Paper 1 - by Bala Nov 29, 2018 - View & Download

• 1)

Why do we call Physics an exact Science?

• 2)

The mass of a body is measured by two persons is 0.2kg and 10.23kg.Which one is more accurate and why?

• 3)

Can the relative velocity of two bodies be greater than the absolute velocity  of either?

• 4)

If $|A\times B|=A.B$, What is the angle between A and B?

• 5)

Does the moment of inertia of a rigid body change with the speed of rotation?

#### 11th Standard CBSE Physics Revision Test - by Bala Sep 15, 2018 - View & Download

• 1)

What is the condition for an object to be considered as a point object?

• 2)

Does the displacement of an object depend on the choice of the postion of origin of the coordinate system?

• 3)

For which condition, the distance and the magnitude of displacement of an object have the same values?

• 4)

Position-time graph could have negative slope Is it true or false?

• 5)

The displacement-time graph of a particle is parallel to time-axis, what is the velocity of the particle?

#### CBSE Class 11 Physics Model Test - by Bala Sep 15, 2018 - View & Download

• 1)

Why do we call Physics an exact Science?

• 2)

Give two approaches to study Physics.

• 3)

Which group of Physics has recently came into existence?

• 4)

Name the scientific principle behind the technology, 'nuclear reactor'.

• 5)

Give one major discovery resulted due to basic laws of electricity and magnetism.

#### Kinetic Theory - Important Questions Model Question Paper 1 In 11th Physics - by Bala Aug 01, 2018 - View & Download

• 1)

What is the value of $\gamma$ to monoatomic gas ?

• 2)

Calculate the number of atoms in 39.4 g gold. Molar mass of gold is 197g mol-1 .

• 3)

The volume of a given mass of a gas at 270C, 1 atm is 100 cc. What will be its volume at 3270C?

• 4)

What is the minimum possible temperature on the basis of Charle's law ?

• 5)

What would be the effect on rms velocity of gas molecules, if the temperature of the gas is increased by a factor 4 ?

#### Thermodynamics - Important Questions Model Paper In 11th Physics - by Bala Aug 01, 2018 - View & Download

• 1)

Temperature in the freezer of a refrigerator is being maintained at -13o C and room temperature on a particular day was 42o C. Calculate the coefficient of performance of the refrigerator.

• 2)

Why a gas is cooled when it expand?

• 3)

Two isothermal curves do not intersect each other, why?

• 4)

Why air quickly leaking out of a balloon becomes cooler?

• 5)

A room can be cooled by opening the door of a refrigerator.Is it true or false?

#### Thermal Properties Of Matter - Important Questions Model Question Paper 1 In 11th Physics - by Bala Aug 01, 2018 - View & Download

• 1)

Black body radiation is white. Comment.

• 2)

Can we boil water inside in the earth satellite?

• 3)

Give the relation between celsis, fahrenheit and reaumur scale temperature.

• 4)

Why birds are often seen to swell their features in winter?

• 5)

Usually a good conductor of heat is a good conductor of electricity also. Give reason.

#### Mechanical Properties Of Fluids - Important Questions Model Question Paper 1 In 11th Physics - by Bala Jul 31, 2018 - View & Download

• 1)

If a wet piece of wood burns, then water droplets appear on the other end, why?

• 2)

Why, surface tension of all lubricating oils and paint is kept low?

• 3)

Find the work done required to make a soap bubble of radius 0.02 m. Given surface tension of soap 0.03 N/m

• 4)

Why does the velocity increase when liquid flowing in a wider tube enters a narrow tube?

• 5)

Can Bernoulli's equation be used to describe the flow of water through a rapid in a river? Explain.

#### 11th Physics Model Question Paper 7 - by Bala Jul 31, 2018 - View & Download

• 1)

Two identical solid balls, one of ivory and the other of wet-clay, are dropped from the same height on the floor. Which will rise to a greater height after striking the floor and why ?

• 2)

Is stress a vector quantity ?

• 3)

A thick wire is suspended from a rigid support, but no load is attached to its free end. Is this wire under stress ?

• 4)

Which type of strain is there, when a spiral spring is stretched by a force ?

• 5)

What does the slope of stress versus strain graph indicate ?

#### Gravitation - Important Questions Model Question Paper 1 In 11th Physics - by Bala Jul 31, 2018 - View & Download

• 1)

If earth be at one half its present distance from the sun, then how many days will there be in a year?

• 2)

Why does tides arise in the oceans?

• 3)

Calculate the mass of the sun, given that distance between the sun and the earth is $1.49\times { 10 }^{ 11 }m$ and $G=6.67\times { 10 }^{ -11 }Nm^{ 2 }/{ k }g^{ 2 }$.

• 4)

Why is the atmosphere much rarer on the moon than one earth?

• 5)

Where does a body weigh more; at the surface of the earth or in a mine?

#### System Of Particles And Roational Motion - Important Questions Model Question Paper 1 In 11th Physics - by Bala Jul 31, 2018 - View & Download

• 1)

A particle is moving on the x-axis with a linear velocity of 2 m/s. What will be its angular momentum about the origin?

• 2)

In a flywheel, most of the mass is concentrated at the rim. Explain why?

• 3)

If a cube is melted and is casted into a sphere, does moment of inertia about an axis through centre of mass increase or decrease.

• 4)

In which case of mass of a body lie outside it? Give one example.

• 5)

Find centre of mass of a triangular lamina.

#### 11th Physics Model Question Paper 2 - by Bala Jul 30, 2018 - View & Download

• 1)

How much work is done by mass M moving once around a horizontal circle of radius r?

• 2)

Friction is a non-conservative force. Why?

• 3)

If the momentum and total energy is conserved, then define the collision is occurred?

• 4)

Which physical terms remain conserved in an inelastic collision?

• 5)

What is the loss in kinetic energy after collision, if the target body is initially at rest?

#### Laws Of Motion - Important Questions Model Question Paper 1 In 11th Physics - by Bala Jul 30, 2018 - View & Download

• 1)

Bodies of larger mass need greater initial effort to put them in motion. why ?

• 2)

Calculate the force acting on a body which changes the momentum of the body at the rate of 1 kg m/s2.

• 3)

A force of 36 dyne is inclined to the horizontal at an angle of 60$^0$ . Find the acceleration in a mass of 18 g that moves in a horizontal diraction.

• 4)

A body is acted upon by a number of external forces. Can it remain at rest ?

• 5)

An impulse is applied to a moving object with a force at an angle of 20$^0$ w.r.t. velocity vector. what is the angle between the impulse vector and change in momentum vector ?

#### Motion In A Plane - Important Questions Model Question Paper 1 In 11th Physics - by Bala Jul 30, 2018 - View & Download

• 1)

Three vectors not lying in a plane can never end up to give a null vector. Is it true?

• 2)

What is the value of $\hat { i } +m\hat { j } ++\hat { k }$ to be unit vector?

• 3)

Two equal forces having their resultant equal to either. At what angle are they inclined?

• 4)

Under what condition the three vectors cannot give zero resultant?

• 5)

What is the angle between A and B, if A and B denote the adjacent sides of a parallelogram drawn from a point and the area of the parallelogram is 1/2 AB?

#### Motion In A Straight Line - Important Questions Model Question Paper 1 In 11th Physics - by Bala Jul 30, 2018 - View & Download

• 1)

What is the condition for an object to be considered as a point object?

• 2)

Does the displacement of an object depend on the choice of the postion of origin of the coordinate system?

• 3)

For which condition, the distance and the magnitude of displacement of an object have the same values?

• 4)

The displacement-time graph for two particles X and Y are straight lines making angles of 30o and 60o with the time axis. What is the ratio of the velocities of Y and X ?

• 5)

With zero speed a particle may have non-zero velocity. Is the statement true or false, explain?

#### 11th Physics Model Question Paper 3 - by Bala Jul 27, 2018 - View & Download

• 1)

Is it possible to have length and velocity both as fundamental quantities?Why?

• 2)

How many astronomical units make one metre?

• 3)

How many amu make 1 kg?

• 4)

Human heart is an inbuilt clock.comment

• 5)

Define one Barn.How it is related with metre?

#### Physical World - Important Questions Model Question Paper 1 In 11th Physics - by Bala Jul 27, 2018 - View & Download

• 1)

Give two approaches to study Physics.

• 2)

Name two major groups of Physics.

• 3)

Quantitative measurement plays major role in Physics, why?

• 4)

Name the scientific principle behind the technology, 'nuclear reactor'.

• 5)

Give one major discovery resulted due to basic laws of electricity and magnetism.

### CBSE Education Study Materials

#### 11th CBSE Physics 2019 - 2020 Academic Syllabus Girish - Chennai Aug 21, 2019

Physics 2019 - 2020 Academic Syllabus

#### Tips to score good marks in CBSE Class 11 Physics ADMIN-ENGLISH Jan 23, 2019

• Practice the important questions from these chapters. Below is the sample question paper f...

#### Tips and Tricks to score good marks in CBSE Class 11 Physics ADMIN-ENGLISH Jan 23, 2019

Scoring good marks in physics is easy if you work on derivations ( important) and numerical. Phys...

#### Tips and Tricks to score good marks in CBSE Class 11 Physics Bala Jan 12, 2019

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#### CBSEStudy Material - Sample Question Papers with Solutions for Class 11 Session 2019 - 2020

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