11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil இயற்கை வேளாண்மை,சுற்றுச்சூழல் -செய்யுள் - மனோன்மணீயம் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil என்னுயிர் என்பேன் -துணைப்பாடம் - இசைத்தமிழர் இருவர் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil மொழி கலை -செய்யுள் - ஒவ்வொரு புல்லையும் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - இலக்கணம் - பகுபத உறுப்புகள் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - துணைப்பாடம் - வாடிவாசல் Important Questions And Answers Study Material - QB365 Set A
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TN 11th Tamil பீடு பெற நில் - செய்யுள் - குறுந்தொகை Important Questions And Answers Study Material - QB365 Set A
Published on: 10/11/2020
11th Standard Physics English Medium Free Online Test One Mark Questions with Answer Key 2020
Download Tamil Nadu 11th Standard Physics question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Physics Test1.
Pressure exerted by a gas is _______.
independent of the density of the gas
inversely proportional to the density of the gas
directly proportional to the density of the gas
directly proportional to the square of the density of the gas
2.
If a liquid wets a solid surface, the angle of contact is _________.
0°
90°
less than°
greater than 90°
3.
A satellite is moving around the Earth with speed v in a circular orbit of radius r. If the orbit radius is decreased by 1% its speed will _______.
increase by 1%
increase by 0.5%
decrease by 1%
decrease by 0.5%
4.
An artificial satellite is revolving round the Earth in a circular orbit, its velocity is half the eacape velocity. Its height from the Earth surface is _________ km.
6400
12800
3200
1600
5.
Energy required to move a body of mass 'M' from an orbit of radius 2R to 3R is =_________
\(\frac{GM}{12R}\)
\(\frac{GMm}{3R^2}\)
\(\frac{GMm}{8R}\)
\(\frac{GMm}{6R}\)
6.
If the temperature and pressure of a gas is doubled the mean free path of the gas molecules
remains same
doubled
tripled
quadrapoled
7.
When you exercise in the morning, by considering your body as thermodynamic system, which of the following is true?
ΔU > 0, W > 0,
ΔU < 0, W > 0,
ΔU < 0, W < 0,
ΔU = 0, W > 0,
8.
The gravitational potential energy of the Moon with respect to Earth is
always positive
always negative
can be positive or negative
always zero
9.
Which of the following example does not constitute a couple?
steering a car
turning a pen cap
ball rolls on the floor
closing the door
10.
Which of the following graph represents the equation y = mx + C?
11.
The moment of inertia of a body about a given axis is 1.2 kgm2. Initially, the body is at rest. In order to produce a rotational kinetic energy of 1500 joule, an angular acceleration 25 radian/sec2 must be applied about that axis lor a duration of ____________.
4 s
2 s
8 s
10 s
12.
An explosion breaks a rock into three parts in a horizontal plane. Two of them go off at right angles to each other. The first part of mass 1 kg moves with a speed of 12 ms-1 and the second part of mass 2 kg moves with 8 ms-1 speed. If the third part flies off with 4 ms-1 speed, then its mass is ____________.
7 kg
17 kg
3 kg
5 kg
13.
A body is moving with a constant speed v in a circle of radius r. Its angular acceleration is ______________.
vr
\(\frac { v }{ r } \)
zero
\(\frac { v }{ { r }^{ 2 } } \)
14.
For a car not to turn safely on a curved road _________________.
speed is slow
distance between tyres is large
centre of gravity for car is low
low friction force
15.
Which of the following force tends to stopthe moving object?
Frictional force
Magnetic force
Gravitational force
Electric force
16.
Inertia is that property of a body by virtue of which the body is ____________.
unable to change by itself the state o frest
unable to change by itself the state of uniform motion
unable to change by itself the direction of motion
unable to change by itself the state of rest and ofunifonn linear motion
17.
A person sitting in an open car moving at constant velocity throws a ball vertically into air, the ball falls ______________.
exactly in the hand of thrower
outside the car
in the car ahead of the person
in the car behind the person
18.
In a rocket, the fuel burns at the rate of 1 kg s-1. This fuel burnt eject gases at a speed of 90 km s-1. The force exerted on the rocket is, ________________.
45000 N
90000 N
60000 N
10000 N
19.
A car when passes through a bridge exerts a force on it which is equal to _____________.
\(mg+\frac { { Mv }^{ 2 } }{ r } \)
\(\frac { { Mv }^{ 2 } }{ r } \)
\(mg-\frac { { Mv }^{ 2 } }{ r } \)
none
20.
If a circle with 10 m radius and angle 60° at centre, then what will be the length of arc?
5.24 m
6.21 m
7.1 mm
10 m
21.
The work done by the conservative force for a closed path is
always negative
zero
always positive
not defined
22.
A rigid body rotates with an angular momentum L. If its kinetic energy is halved, the angular momentum becomes,
L
L/2
2L
L/\(\sqrt{2}\)
23.
Two blocks of masses m and 2m are placed on a smooth horizontal surface as shown. In the first case only a force F1 is applied from the left. Later only a force F2 is applied from the right. If the force acting at the interface of the two blocks in the two cases is same, then F1 :F2 is
1:1
1:2
2:1
1:3
24.
A ball is projected vertically upwards with a velocity v. It comes back to ground in time t. Which v-t graph shows the motion correctly?
25.
If the length and time period of an oscillating pendulum have errors of 1% and 3% respectively then the error in measurement of acceleration due to gravity is
4%
5%
6%
7%
1.
(c)
directly proportional to the density of the gas
2.
(c)
less than°
3.
(b)
increase by 0.5%
4.
(a)
6400
5.
(d)
\(\frac{GMm}{6R}\)
6.
Mean free path is independent of temperature and pressure
7.
\(\Delta Q=\Delta U+\Delta W\)
When, exercise is performed internal energy is utilised (\(\Delta\)U < 0) so it will decrease. But as intemal energy is utilised, exercise ( \(\Delta\)W ) will be more efficient.
\(\therefore \Delta W>0 \ \therefore \Delta U <0 \mathrm{~W}>0\)
8.
(b)
always negative
9.
(c)
ball rolls on the floor
10.
(d)
11.
(b)
2 s
12.
(d)
5 kg
13.
(c)
zero
14.
(d)
low friction force
15.
(a)
Frictional force
16.
(d)
unable to change by itself the state of rest and ofunifonn linear motion
17.
(a)
exactly in the hand of thrower
18.
(b)
90000 N
19.
(c)
\(mg-\frac { { Mv }^{ 2 } }{ r } \)
20.
(a)
5.24 m
21.
(b)
zero
22.
\(K \cdot E=\frac{1}{2} I \omega^{2} ; \quad L=I \omega ; \quad K \cdot E=\frac{2^{2}}{2^{2}} \)
\(\therefore K \cdot E \alpha L^{2} \quad E_{1} \alpha L_{1}^{2} \quad E_{2} \alpha L_{2}^{2}\)
\(\frac{E_{1}}{E_{2}}=\left(\frac{L_{1}}{L_{2}}\right)^{2} \)
\(\text { Here } E_{1}=E \quad E_{2}=\frac{E}{2} \)
\(L_{1}=L \quad \quad L_{2}=? \)
\(\frac{E}{\frac{E}{2}}=\left(\frac{L}{L_{2}}\right)^{2} \)
\(\frac{2 E}{E}=\left(\frac{L}{L_{2}}\right)^{2}\left(\frac{L_{1}}{L_{2}}\right)^{2}=2 \)
\(\therefore \frac{L}{L_{2}}=\sqrt{2} \)
\(L_{2}=\frac{L}{\sqrt{2}} \)
23.
(c)
2:1
24.
Initially velocity has maximum value and at maximum height velocity becomes zero. After that the velocity becomes negative
25.
\(T =2 \pi \sqrt{\frac{l}{g}} \)
\(g =4 \pi^{2} l / T^{2} \)
\(\frac{d g}{g} =\frac{d l}{l}-\frac{2 d T}{T} \)
\(\frac{d g}{g} \% =\left(\frac{d l}{l}\right) \%-2\left(\frac{d T}{T}\right) \% \)
\(=1 \%-2 \times(-3 \%) \)
\(=1+6=7 \% \)
11th Standard Syllabus & Materials
11th Standard
TN 11th Tamil பீடு பெற நில் - செய்யுள் - காவடிச்சிந்து Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil பீடு பெற நில் - உரைநடை - மலை இடப்பெயர்கள் : ஓர் ஆய்வு Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - துணைப்பாடம் - யானை டாக்டர் Important Questions And Answers Study Material - QB365 Set A
NEW11th Standard
TN 11th Tamil மாமழை போற்றுதும் - செய்யுள் - ஐங்குறுநூறு Important Questions And Answers Study Material - QB365 Set A
Tamilnadu Stateboard 11th Standard Subjects
Maths
Commerce
Economics
Biology
Business Maths and Statistics
Accountancy
Computer Science
Physics
Chemistry
Maths
Biology
Economics
Physics
Chemistry
History
Business Maths and Statistics
Computer Science
Accountancy
Computer Applications
History
Computer Technology
Commerce
Computer Applications
Computer Technology
Tamil
English
French
Tamilnadu Stateboard Standards
