Which of the following pairs does not have same dimension?

(a)

Moment of inertia and moment of force

(b)

Work and torque

(c)

Impulse and momentum

(d)

Angular momentum and Plank's constant

Two quantities A and B have different dimensions. Which of the following is physically meaningful?

(a)

A+B

(b)

A-B

(c)

A/B

(d)

None

The dimensional formula for moment of inertia_______________

(a)

ML^oT^-2

(b)

ML^-1T^-2

(c)

ML²T^o

(d)

ML²T^o

A ratio signal sent towards the distant planet, returns after "t"s. If "c" is the speed of radio waves then the distance of the planet and from the earth is______________.

(a)

\(c\frac{t}{2}\)

(b)

ct²

(c)

2ct

(d)

\(c^2\frac{t^2}{2}\)

Find odd one out_____________.

(a)

Newton

(b)

metre

(c)

candela

(d)

Kelvin

The shift in the position of an object when viewed with two eyes, keeping one eye closed at a time is known as___________.

(a)

basis

(b)

fundamental

(c)

parallax

(d)

pendulum

Chandrasekar limit is___________times the mass of the sun.

(a)

1.2

(b)

1.4

(c)

1.6

(d)

1.8

The smallest physical unit of time is__________.

(a)

second

(b)

minute

(c)

microsecond

(d)

shake

Size of atomic nucleus is___________.

(a)

10^-10m

(b)

10^-12m

(c)

10^-14m

(d)

10^-18m

Time interval between two successive heart beat is in the order of_____________.

(a)

10° s

(b)

10 s

(c)

10² s

(d)

10^-3 s

Half life time of a free neutron is in the order of___________.

(a)

10°

(b)

10¹s

(c)

10² s

(d)

10³ s

The uncertainty contained in any measurement is__________.

(a)

rounding off

(b)

error

(c)

parallax

(d)

gross

The unit of surface tension ______________.

(a)

MT^-2

(b)

Nm^-2

(c)

Nm

(d)

Nm^-1

One atomus equal to ____________.

(a)

100 ms

(b)

\(\frac { 1 }{ 6.25 } \) ms

(c)

160 ms

(d)

160 ms

One light year is________________.

(a)

3.153\(\times\)10⁷ m

(b)

1.496\(\times\)10⁷ m

(c)

9.46\(\times\)10¹² km

(d)

3.26\(\times\)10¹⁵ m

One Astronomical unit is_____

(a)

3.153\(\times\)10⁷ m

(b)

1.496\(\times\)10⁷ m

(c)

9.46\(\times\)10¹² km

(d)

3.26\(\times\)10¹⁵ m

One parsec is_______________.

(a)

3.153\(\times\)10⁷ m

(b)

3.26\(\times\)10¹⁵ m

(c)

30.84\(\times\)10¹⁵ m

(d)

9.46\(\times\)10¹⁵ m

One Fermi is______________.

(a)

10^-9 m

(b)

10^-10 m

(c)

10^-12 m

(d)

10^-15 m

One Angstrom is______________.

(a)

10^-9 m

(b)

10^-10 m

(c)

10^-12 m

(d)

10^-15 m

One solar mass is______________.

(a)

2\(\times\)10³⁰kg

(b)

2\(\times\)10³⁰g

(c)

2\(\times\)10³⁰mg

(d)

2\(\times\)10³⁰tonne

\(\frac { 1 }{ 12 } \) of the mass of carbon 12 atom is_______________.

(a)

1 TMC

(b)

mass of neutron

(c)

1 amu

(d)

mass of hydrogen

The word physics is derived from the word____________.

(a)

scientist

(b)

fusis

(c)

fission

(d)

fusion

The study of forces acting on bodies whether at rest or in motion is______________.

(a)

classical mechanics

(b)

quantum mechanics

(c)

thermodynamics

(d)

condensed matter physics

Mass of observable universe______________.

(a)

10³¹kg

(b)

10⁴¹kg

(c)

10⁵⁵kg

(d)

9.11\(\times\)10³¹kg

Mass of an electron_______________

(a)

10^-34kg

(b)

9.11\(\times\)10^-34kg

(c)

1.6\(\times\)10^-31kg

(d)

1.6\(\times\)10^-27kg

The study of production and propagation of sound waves_____________.

(a)

Astrophysics

(b)

Acoustics

(c)

Relativity

(d)

Atomic physics

The study of the discrete nature of phenomena at the atomic and subatomic levels _______________.

(a)

Quantum mechanics

(b)

High energy physics

(c)

Acoustics

(d)

Classical mechanics

The techniques used to study the crystal structure of various rocks are______________.

(a)

diffraction

(b)

interference

(c)

total internal reflection

(d)

refraction

The astronomers used to observe distant points of the universe by_____________.

(a)

Electron telescope

(b)

Astronomical telescope

(c)

Radio telescope

(d)

Radar

Which of the following is having same dimensional formula?

(a)

Work and power

(b)

Radius of gyration and displacement

(c)

Impulse and force

(d)

Frequencies and wavelength

Which of the following quantities is expressed as force per unit area?

(a)

Pressure

(b)

Stress

(c)

Both (a) and (b)

(d)

None

In equation of motion S = ut+\(1\over 2\)kt² the dimensional formula for K is______________

(a)

[L T^-1]

(b)

[L T^-2]

(c)

[T]

(d)

[L^-1 T]

The dimensional formula for heat capacity__________________

(a)

[ML²T²]

(b)

[M L² K^-1]

(c)

[M L² T² K^-1]

(d)

[M L² T² K^-1]

The product of Avogadro constant and elementary charge is known as __________constant.

(a)

Planck's

(b)

Avagadro

(c)

Boltzmann

(d)

Faraday

The force F is given by F = at + bt² where t is time. The dimensions of 'a' and 'b' respectively are _____________.

(a)

[M LT^-3] and [MLT^-4]

(b)

[M LT^-4] and [MLT^-3]

(c)

[M LT^-1] and [MLT^-2]

(d)

[M LT^-2] and [MLT^-0]

Dimensions of impulse are _______________

(a)

[ML²T^-1]

(b)

[MLT^-2]

(c)

[MLT^-1]

(d)

[ML²T⁰]

If speed of light (c), acceleration due to gravity (g) and pressure (P) are taken as fundamental units, the possible relation to gravitational constant (G) is ___________________

(a)

c^o g p^-3

(b)

c² g³ p^-2

(c)

c ^o g³ p^-1

(d)

c ² g² p^-2

Equivalent of one joule is____________

(a)

Nm²

(b)

kgm²s^-2

(c)

kgms^-1

(d)

Nkgm²

Zero error of an instrument is a______________.

(a)

Systematic error

(b)

Random error

(c)

Gross error

(d)

Both (a) and (b)

Error in the measurement of radius of a sphere is 2%. Then error in the measurement of surface area is___________.

(a)

1%

(b)

2%

(c)

3%

(d)

4%

Imperfections in experimental procedure gives______errors.

(a)

random

(b)

gross

(c)

systematic

(d)

personal

Random error can also be called as__________.

(a)

personal error

(b)

chance error

(c)

gross error

(d)

system error

To get the best possible true value of the quantity___________has to be taken.

(a)

rms value

(b)

net value

(c)

arithmetic mean

(d)

mode

The error caused due to the shear carelessness of an observer is called as____________error.

(a)

Systematise

(b)

Gross

(c)

Random

(d)

Personal

The uncertainty in a measurement is called as____________.

(a)

error

(b)

systematic

(c)

random error

(d)

gross error

The difference between the true value and the measured value of a quantity is known as________.

(a)

Absolute error

(b)

Relative error

(c)

Percentage error

(d)

Systemmatic error

If a₁, a₂, a₃.... a_n are the measured value of a physical quantity "a" and a_m is the true value then absolute error___________.

(a)

\(a_m=\triangle a_n+a_n\)

(b)

\(\triangle a_n=a_m+a_n\)

(c)

\(\triangle a_n=a_m-a_m\)

(d)

\(\triangle a_n=a_m-a_n\)

If 'a_m' and '\(\triangle a_m\)' are true value and mean absolute error respectively, then the magnitude of the quantity may lie between____________.

(a)

a_m + a_n to a_m - a_n

(b)

a_m-\(\Delta\)a_m to a_m + \(\Delta\)a_m

(c)

2a_m to \(\Delta\)a_m

(d)

0 to 2a_m

The comparison of any physical quantity with its standard unit is known as__________

(a)

fundamental quantities

(b)

measurement

(c)

dualism

(d)

derived quantities

Fundamental quantities can also be known as________quantities.

(a)

original

(b)

physical

(c)

negative

(d)

base