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Units and Dimensions NEET Questions

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NEET Units and Dimensions Practice Problems

Question 1
In the following list, the only pair which have different dimensions, is

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A
Linear momentum and moment of a force
B
Pressure and modulus of elasticity
C
Torque and potential energy
D
Planck's constant and angular momentum
Question 2
Newton–second is the unit of

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A
Energy
B
Momentum
C
Velocity
D
Angular momentum
Question 3
Which of the following quantity is expressed as force per unit area?
A
Area
B
Pressure
C
Volume
D
Work
Question 4
The quantities A and B are related by the relation, m = A/B, where m is the linear density and A is the force. The dimensions of B are of
A
Work
B
Pressure
C
None of the above
D
Latent heat
Question 5
Two quantities A and B have different dimensions. Which mathematical operation given below is physically meaningful
A
A – B
B
A / B
C
None
D
A + B
Question 6
Density of wood is 0.5 gm / cc in the CGS system of units. The corresponding value in MKS units is
A
5000
B
0.5
C
5
D
500
Question 7
SI unit of pressure is
A
Ampere
B
Pascal
C
Joule
D
Watt
Question 8
If the unit of length and force be increased four times, then the unit of energy is
A
Increased 8 times
B
Increased 4 times
C
Decreased 16 times
D
Increased 16 times
Question 9
The unit of reduction factor of tangent galvanometer is

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A
None of these
B
Radian
C
Gauss
D
Ampere
Question 10
Electron volt is a unit of
A
Charge
B
Potential difference
C
Momentum
D
Energy
Question 11
The dimensions of "time constant" L/R during growth and decay of current in all inductive circuit is same as that of
A
Constant
B
Resistance
C
Current
D
Time
Question 12
Out of the following, the only pair that does not have identical dimensions is

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A
Moment of inertia and moment of a force
B
Angular momentum and Planck's constant
C
Impulse and momentum
D
Work and torque
Question 13
Tesla is a unit for measuring
A
Magnetic pole strength
B
Magnetic induction
C
Magnetic moment
D
Magnetic intensity
Question 14
One second is equal to
A
1650763.73 time periods of Cs clock
B
652189.63 time periods of Kr clock
C
1650763.73 time periods of Kr clock
D
9192631770 time periods of Cs clock
Question 15
Dimensions of one or more pairs are same. Identify the pairs
A
Energy and Young's modulus
B
Angular momentum and work
C
Torque and work
D
Light year and wavelength
Question 16
Which one of the following does not have the same dimensions?
A
Relative density and refractive index
B
Planck constant and energy
C
Work and energy
D
Angle and strain
Question 17
Candela is the unit of
A
None of these
B
Sound intensity
C
Electric intensity
D
Luminous intensity
Question 18
Parsec is a unit of
A
Angle
B
Velocity
C
Time
D
Distance
Question 19
A cube has numerically equal volume and surface area. The volume of such a cube is
A
216 units
B
3000 units
C
2000 units
D
1000 units
Question 20
Which pair has the same dimensions?
A
Work and power
B
Momentum and impulse
C
Density and relative density
D
Stress and strain
Question 21
Volt/metre is the unit of
A
Force
B
Potential
C
Work
D
Electric intensity
Question 22
The pair having the same dimensions is
A
Angular momentum, work
B
Work, torque
C
Potential energy, linear momentum
D
Kinetic energy, velocity
There are 22 questions to complete.
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