Solving the Units and Measurements Multiple Choice Questions of Class 11 Physics Chapter 2 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Units and Measurements Class 11 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 2 Physics Class 11 and cross-check your answers during preparation.

Question 1.
Electron volt is a unit of
(a) charge
(b) potential difference
(c) energy
(d) magnetic force

Answer

Answer: (c) energy

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Question 2.
Light year is a unit of
(a) time
(b) distance
(c) sunlight intensity
(d) mass

Answer

Answer: (b) distance

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Question 3.
Which of the following pairs has the same dimensions?
(a) specific heat and latent heat
(b) lmpulse and momentum
(c) surface tension and force
(d) moment of lnertia and torque

Answer

Answer: (b) lmpulse and momentum

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Question 4.
Which of the following sets of quantities has the same dimensional formula?
(a) Frequency, angular frequency and angular momentum
(b) Surface tension, stress and spring constant
(c) Acceleration, momentum and retardation
(d) Work, energy and torque

Answer

Answer: (d) Work, energy and torque

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Question 5.
If C and R denote capacitance and resistance respectively, what will be the dimensions of C x R?
(a) [M0L0TA0]
(b) [ML0TA-2]
(c) [ML0TA2]
(d) [MLTA-2]

Answer

Answer: (a) [M0L0TA0]

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Question 6.
A particle starting from the origin (0, 0) moves in a straight line in the (x, y) plane. Its coordinates at a later time are (The path of the particle makes with the x-axis an angle of
(a) 300
(b) 450
(c) 600
(d) 0

Answer

Answer: (c) 600

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Question 7.
Resolution is
(a) a measure of the bias in the instrument
(b) None of these
(c) the smallest amount of input signal change that the instrument can detect reliably
(d) a measure of the systematic errors

Answer

Answer: (d) a measure of the systematic errors

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Question 8.
Fundamental or base quantities are arbitrary. In SI system these are
(a) length, force, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity
(b) length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity
(c) as length, mass, time, electric charge, thermodynamic temperature, amount of substance, and luminous intensity
(d) length, mass, force, electric current, thermodynamic temperature, amount of substance, and luminous intensity

Answer

Answer: (b) length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity

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Question 9.
Unit for a fundamental physical quantity is
(a) defined as best of various reference standards
(b) the smallest measurable value of the physical quantity
(c) defined as average various reference standards
(d) reference standard for the physical quantity

Answer

Answer: (d) reference standard for the physical quantity

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Question 10.
The volume of a cube in m³ is equal to the surface area of the cube in m². The volume of the cube is
(a) 64 m³
(b) 216 m³
(c) 512 m³
(d) 196 m³

Answer

Answer: (b) 216 m³

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Question 11.
In SI system the fundamental units are
(a) meter, kilogram, second, ampere, Kelvin, mole and candela
(b) meter, kilogram, second, coulomb, Kelvin, mole and candela
(c) meter, Newton, second, ampere, Kelvin, mole and candela
(d) meter, kilogram, second, ampere, Kelvin, mole and lux

Answer

Answer: (b) meter, kilogram, second, coulomb, Kelvin, mole and candela

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Question 12.
F energy (E), velocity (v) and force (F) are taken as fundamental quantities, what are the dimensions of mass?
(a) Ev2
(b) Ev -2
(c) Fv -1
(d) Fv -2

Answer

Answer: (b) Ev -2

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Question 13.
Unit for a fundamental physical quantity is
(a) defined as best of various reference standards
(b) the smallest measurable value of the physical quantity
(c) defined as average various reference standards
(d) reference standard for the physical quantity

Answer

Answer: (d) reference standard for the physical quantity

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Question 14.
Fundamental or base quantities are arbitrary. In SI system these are
(a) length, force, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity
(b) length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity
(c) as length, mass, time, electric charge, thermodynamic temperature, amount of substance, and luminous intensity
(d) length, mass, force, electric current, thermodynamic temperature, amount of substance, and luminous intensity

Answer

Answer: (b) length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity

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Question 15.
Physical quantities are
(a) quantities such as degrees, radians and steradians
(b) quantities such as length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity
(c) quantities such as pounds, dollars and rupees
(d) quantities such as kilos, pounds and gallons

Answer

Answer: (b) quantities such as length, mass, time, electric current, thermodynamic temperature, amount of substance, and luminous intensity

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Question 16.
Which of the following units denotes the dimensions [ML2/Q2], where Q represents the electric charge?
(a) Wb/m²
(b) Henry(H)
(c) H/m²
(d) Weber(Wb)

Answer

Answer: (b) Henry(H)

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Question 17.
Which of the following sets of quantities has the same dimensional formula?
(a) Frequency, angular frequency and angular momentum
(b) Surface tension, stress and spring constant
(c) Acceleration, momentum and retardation
(d) Work, energy and torque

Answer

Answer: (d) Work, energy and torque

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Question 18.
If C and R denote capacitance and resistance respectively, what will be the dimensions of CxR?
(a) [M0L0TA0]
(b) [ML0TA-2]
(c) [ML0TA2]
(d) [MLTA-2]

Answer

Answer: (a) [M0L0TA0]

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Question 19.
The volume of a cube in m³ is equal to the surface area of the cube in m². The volume of the cube is
(a) 64 m³
(b) 216 m³
(c) 512 m³
(d) 196 m³

Answer

Answer: (b) 216 m³

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Question 20.
Electron volt is a unit of
(a) charge
(b) potential difference
(c) energy
(d) magnetic force

Answer

Answer: (c) energy

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