1. Faraday is the unit of

a) Charge

b) emf

c) Mass

d) Energy

Explanation: 1 Faraday = 96500 coulomb

2. Candela is the unit of

a) Electric intensity

b) Luminous intensity

c) Sound intensity

d) none of these

Explanation: Candela is the unit of Luminous intensity

3. The unit of reactance is

a) Ohm

b) Volt

c) Mho

d) Newton

Explanation: The unit of reactance is Ohm

4. The unit of Planck's constant is

a) Joule

b) Joule/s

c) Joule/m

d) Joule-s

Explanation: Joule-s

5. Number of base SI units is

a) 4

b) 7

c) 3

d) 5

Explanation: Number of base SI units is 7

6. SI unit of permittivity is

a) \[c^{2}m^{2}N^{-1}\]

b) \[c^{-1}m^{2}N^{-2}\]

c) \[c^{2}m^{2}N^{2}\]

d) \[c^{2}m^{-2}N^{-1}\]

Explanation:

7. Which does not has the same unit as others

a) Watt-sec

b) Kilowatt-hour

c) eV

d) J-sec

Explanation: Joule-sec is the unit of angular momentum where as other units are of energy

8. Unit of surface tension is

a) \[Nm^{-1}\]

b) \[Nm^{-2}\]

c) \[N^{2}m^{-1}\]

d) \[Nm^{-3}\]

Explanation:

9. Which of the following system of units is not based on units of mass, length and time alone

a) SI

b) MKS

c) FPS

d) CGS

Explanation: Because in S.I. system there are seven fundamental quantities.

10. The unit of Young’s modulus is

a) \[Nm^{2}\]

b) \[Nm^{-2}\]

c) Nm

d) \[Nm^{-1}\]

Explanation: \[Nm^{-2}\]