# Units and Measurements MCQ Questions for Class 11 Physics Chapter 2 with Answers

NCERTCOURSE.COM given here the NCERT chapter-wise Multiple Choice Questions from Class 11 Physics book Chapter 2 Units and Measurements with Answers Pdf free download. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Units and Measurements. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.

## Q1. The zero error belongs to the category of:

(i) constant error
(ii) personal error
(iii) accidental error
(iv) instrumental error

(iv) instrumental error

## Q2. Resolution is

(i) a measure of the bias in the instrument
(ii) None of these
(iii) the smallest amount of input signal change that the instrument can detect reliably
(iv) a measure of the systematic errors

(iv) a measure of the systematic errors

## Q3. The most suitable instrument for measuring the size of an atom is.

(i) Electron microscope
(ii) Vernier calliper
(iii) Optical Microscope
(iv) Screw gauge

(i) Electron microscope

(i) force
(ii) pressure
(iii) work
(iv) momentum

(iii) work

## Q5. Joule second is a unit of

(i) angular momentum
(ii) torque
(iii) energy
(iv) power

(i) angular momentum

## Q6. Which of the following have the same dimensions as Plank’s constant?

(i) Moment of momentum
(ii) Moment of fierce
(iii) Momentum/distance
(iv) Force/distance

(i) Moment of momentum

## Q7. Which of the following pairs has the same dimensions?

(i) specific heat and latent heat
(ii) lmpulse and momentum
(iii) surface tension and force
(iv) moment of lnertia and torque

(ii) lmpulse and momentum

## Q8. Two physical quantities whose dimensions are not same, cannot be :

(i) multiplied with each other
(ii) divided
(iii) added or substracted in the same expression

(iii) added or substracted in the same expression

(i) FA2T
(ii) FAT2
(iii) FA2T
(iv) FAT

(ii) FAT2

(i) pressure
(ii) volume
(iii) density
(iv) flux

(i) pressure

(i) 1/2 times
(ii) 2 times
(iii) 4 times
(iv) 1/4 times

(iii) 4 times

## Q12. Electron volt is a unit of

(i) charge
(ii) potential difference
(iii) energy
(iv) magnetic force

(iii) energy

(i) Energy
(ii) Watt hour
(iii) Momentum
(iv) Work

(iii) Momentum

(i) [M 2L2T]
(ii) [ML 2T]
(iii) [ML 2T-2]
(iv) [ML 2T-1]

(iii) [ML 2T-2]

## Q15. One second is defined to be equal to

(i) 9192631770 periods of the cesium clock
(ii) 1650763.73 periods of the cesium clock
(iii) 652189.63 periods of the krypton clock
(iv) 1650763.73 periods of the krypton clock

(i) 9192631770 periods of the cesium clock

## Q16. The weight of a body is 12g. This statement is not correct because:

(а) the correct symbol for the unit of weight has not been used
(ii) the correct symbol for gram is gm.
(iii) the weight should be expressed in kg.
(iv) None of the above

(а) the correct symbol for the unit of weight has not been used

(i) Wb/m²
(ii) Henry(H)
(iii) H/m²
(iv) Weber(Wb)

(ii) Henry(H)

## Q18. In the above question dimensions of b/c are the same as those of

(i) Wave velocity
(ii) Wavelength
(iii) Wave amplitude
(iv) Wave frequency

(i) Wave velocity

(i) 300
(ii) 450
(iii) 600
(iv) 0

(iii) 600

## Q20. Unit for a fundamental physical quantity is

(i) defined as best of various reference standards
(ii) the smallest measurable value of the physical quantity
(iii) defined as average various reference standards
(iv) reference standard for the physical quantity

(iv) reference standard for the physical quantity

(i) 6
(ii) 2
(iii) 4
(iv) 3

(iv) 3

(i) 64 m³
(ii) 216 m³
(iii) 512 m³
(iv) 196 m³

(ii) 216 m³

## Q23. Which of the following is a dimensional constant?

(i) Gravitational constant
(ii) Dielectric constant
(iii) Refractive index
(iv) Relative density

(i) Gravitational constant

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## Class 11 Physics MCQ Questions Chapter wise with Answers

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