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Published on: 21/10/2025
Download CBSE Class 11th Standard CBSE Physics question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 11th Standard CBSE Physics
Questions + Answers key
Take MCQ Physics Test
1.
Which of the following pairs of physical quantities does not have same dimensional formula?
Work and torque.
Angular momentum and Planck's constant.
Tension and surface tension.
Impulse and linear momentum
2.
Dimensions of gravitational constant are: ______.
M-1 L3 T-2
M-2 L 3 T-1
M3L-1 T-2
M-1 L2 T-3
3.
A dimensionless quantity ______.
may have a unit
never has a unit
always has a unit
doesn't exist
4.
Which of the following has metre kelvin as the unit?
Rydberg constant
Wein's constant
Solar constant
Gas constant.
5.
Which of the following are not a unit of time?
Second
Parsec
Year
Light year
6.
Which of the following ratios expresses pressure?
Force/Area
Energy/ Density
Energy/ Area
Force/Volume
7.
Photon is quantum of radiation with energy E = hv where v is frequency and h is Planck's constant. The dimensions of h are the same as that of ______.
Linear impulse
Angular impulse
Linear momentum
Angular momentum
8.
Which of the following set have different dimensions?
Pressure, Young's modulus, Stress
Emf, potential difference, Electric potential
Heat, Work done, Energy
Dipole moment, Electric flux, Electric field
9.
Pressure is defined as: ______.
Momentum per unit area
Momentum per unit area per unit time
Momentum per unit volume
Energy per unit volume
10.
The pairs of physical quantities that have the same dimensions are: ______.
Reynolds number and coefficient of friction
Latent heat and gravitational potential
Curie and frequency of light wave
Planck's constant and torque.
11.
The units of electrical permittivity are: ______.
N-1m-2C2
Nm-2C2
C2/Nm2
n/Cm2
12.
The unit of charge is: ______.
Ampere
Coulomb
Ampere/sec
Ampere-second
13.
The dimensions of capacitance are (where Q is the dimension of charge): ______.
M-1L -2T2Q2
MLT-2Q-2
M1L-1T 2
M-1L -2T2Q
14.
The pair(s) of physical quantities that have the same dimensions is (are): ______.
volumetric strain and coefficient of friction.
disintegration constant of a radioactive substance and frequency of light wave.
heat capacity and gravitational potential.
Planck's constant and torque
15.
The number of significant figures in 3400 is _____.
3
4
2
1
16.
Which one of the following quantities has not been expressed in proper units?
Coeff. of elasticity: N/m2
Surface tension: N/m
Energy: kg m/s
Pressure: N/m2
17.
Which of the following sets cannot enter into the list of fundamental quantities in any system of units?
Length, time and velocity
Length, mass and velocity
Mass, time and velocity
Length, time and mass.
18.
The dimensional formula for latent heat is _____.
MoL 2T-1
ML2T-1
MLT-2
ML2T-2
19.
Which of the following is a dimensional constant?
refractive index
dielectric constant
relative density
gravitational constant
20.
Which of the following have same dimensions?
Specific heat and latent heat
Momentum and impulse
Moment of inertia and moment of momentum.
Tension and surface tension.
21.
The numbers 2.745 and 2.735 on rounding off to 3 significant figures will give _____.
2.75 and 2.74
2.74 and 2.73
2.75 and 2.73
2.74 and 2.74
22.
Among the given following system of unit which is not based on unit of mass, length and time?
CGS
FPS
MKS
SI
23.
Which one of the following physical quantities is not a fundamental quantity?
Luminous intensity
Thermodynamic temperature
Electric current
Work
24.
. On checking the dimensional consistency of equation, it is based on the principle of _____.
homogeneity of equations
homogeneity of dimensions
homogeneity of expressions
homogeneity of formula
25.
Which physical quantities have same dimension?
Force and power
Torque and energy
Torque and power
Force and torque
26.
Which of the following has neither units nor dimensions?
Angle
Energy
Relative density
Relative velocity
27.
Which of the following is not a dimensional constant?
Gravitational constant
\(\pi\)
Planck's constant
Gas constant (R)
28.
The dimensional formula of Avagadro's number is _____.
\(\left[\mathrm{M}^{1} \mathrm{~L}^{1} \mathrm{~T}^{1}\right]\)
\(\left[\mathrm{mole}^{-1}\right]\)
[mole]
\(\left[\mathrm{M}^{0} \mathrm{~L}^{1} \mathrm{~T}^{0}\right]\)
29.
Which of the following sets have different dimensions?
Dipole moment, Electric field and Electric flux
Pressure, Young's modulus, Stress
Heat, Work, Energy
Emf, Potential difference and potential.
30.
Which of the following has same dimension as that of Planck constant?
Work
Linear momentum
Angular momentum
Impulse
1.
(c)
Tension and surface tension.
2.
(a)
M-1 L3 T-2
3.
(a)
may have a unit
4.
(b)
Wein's constant
5.
(b)
Parsec
6.
(d)
Force/Volume
7.
(b)
Angular impulse
8.
(d)
Dipole moment, Electric flux, Electric field
9.
(b)
Momentum per unit area per unit time
10.
(a)
Reynolds number and coefficient of friction
11.
(a)
N-1m-2C2
12.
(c)
Ampere/sec
13.
(a)
M-1L -2T2Q2
14.
(a)
volumetric strain and coefficient of friction.
15.
(c)
2
16.
(c)
Energy: kg m/s
17.
(a)
Length, time and velocity
18.
(a)
MoL 2T-1
19.
(d)
gravitational constant
20.
(b)
Momentum and impulse
21.
(d)
2.74 and 2.74
22.
(d)
SI
23.
(d)
Work
24.
(b)
homogeneity of dimensions
25.
(b)
Torque and energy
26.
(c)
Relative density
27.
(b)
\(\pi\)
28.
(b)
\(\left[\mathrm{mole}^{-1}\right]\)
29.
(a)
Dipole moment, Electric field and Electric flux
30.
(c)
Angular momentum
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