CBSE Class 11 Physics Units and Measurements Quiz 1

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CBSE › Class 11 › Physics › Units and Measurements

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1. 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

2. 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

3. The dimensions of kinetic energy is

A [M 2L2T] B [ML 2T] C [ML 2T-2] D [ML 2T-1]

4. A force F is given by F = at + bt², where t is time. What are the dimensions of a and b?

A MLT-1 and MLT0 B MLT-3 and ML2T4 C MLT-4 and MLT1 D MLT-3 and MLT-4

5. The atmospheric pressure is 106 dyne/cm². What is its value in SI unit?

A 105 newton/m² B 106 newton/m² C 104 newton/m² D 103 newton/m²

6. In a system of units if force (F), acceleration (A) and time (T) are taken as fundamentals units then the dimensional formula of energy is

A FA2T B FAT2 C FA2T D FAT

7. If force (F), work (W) and velocity (v) are taken as fundamental quantities. What is the dimensional formula of time (T)?

A [WFv] B [WFv-1] C [W-1F -1v] D [WF-1v -1]

8. The dimensions of kinetic energy is same as that of

A force B pressure C work D momentum

9. Which of the following groups have different dimensions?

A Potential difference, EMF, voltage B Pressure, stress, Youngs modulus C Heat, energy, work done D Dipole moment, electric flux, electric field

10. ML-1T -2 is the dimensional formula of

A magnetic induction B self-inductance C electric potential D electric field

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