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: \[Nm^{-2}\]