The S.I. unit of gravitational potential is

1. J

2. $J\text{-}k{g}^{-1}$

3. $J\text{-}kg$

4. $J\text{-}k{g}^{-2}$

Which one of the following is not a unit of young's modulus?

1. $N{m}^{-1}$

2. $N{m}^{-2}$

3. $Dynec{m}^{-2}$

4. Mega Pascal

In C.G.S. system the magnitutde of the force is 100 dynes. In another system where the fundamental physical quantities are kilogram, metre and minute, the magnitude of the force is

1. 0.036

2. 0.36

3. 3.6

4. 36

The unit of L/R is (where L = inductance and R = resistance)

1. sec

2. sec^–1

3. Volt

4. Ampere

Which is different from others by units?

1. Phase difference

2. Mechanical equivalent

3. Loudness of sound

4. Poisson's ratio

Length cannot be measured by

1. Fermi

2. Debye

3. Micron

4. Light year

The value of Planck's constant is

1. $6.63\times {10}^{-34}J\text{-}\sec$

2. $6.63\times {10}^{34}J\text{}/\text{}\sec$

3. $6.63\times {10}^{-34}kg\text{-}{m}^2$

4. $6.63\times {10}^{34}kg\text{}/\text{}\sec$

A physical quantity is measured and its value is found to be nu where n = numerical value and u = unit. Then which of the following relations is true

1. $n\propto u^2$

2. $n\propto u$

3. $n\propto \sqrt{u}$

4. $n\propto \frac{1}{u}$

Faraday is the unit of

1. Charge

2. emf

3. Mass

4. Energy

Candela is the unit of

1. Electric intensity

2. Luminous intensity

3. Sound intensity

4. None of these