A light-year is a unit of: 

1.	Time	2.	Mass
3.	Distance	4.	Energy

The magnitude of any physical quantity:

Which of the following is not equal to a watt?
1. Joule/second
2. Ampere$\times$ volt
3. ( Ampere)²$\times$ ohm
4. Ampere/volt

Newton–second is the unit of  

1. Velocity

2. Angular momentum

3. Momentum

4. Energy

Which of the following is not represented in correct unit  

1. $\frac{\text{Stress}}{\text{Strain}}=N\text{}/\text{}{m}^2$

2. Surface tension = $N\text{}/\text{}m$

3. Energy $=kg\text{-}m\text{}/\text{}\sec$

4. Pressure $=N\text{}/\text{}{m}^2$

One second is equal to :

1. 1650763.73 time periods of $Kr$ clock

2. 652189.63 time periods of $Kr$ clock

3. 1650763.73 time periods of $Cs$ clock

4. 9192631770 time periods of $Cs$ clock

One nanometre is equal to:

1. ${10}^{9}mm$

2. ${10}^{-6}cm$

3. ${10}^{-7}cm$

4. ${10}^{-9}cm$

A micron is related to centimetre as

1. $1micron={10}^{-8}cm$

2. $1micron={10}^{-6}cm$

3. $1micron={10}^{-5}cm$

4. $1micron={10}^{-4}cm$

The unit of power is :

1. Joule

2. Joule per second only

3. Joule per second and watt both

4. Only watt

A suitable unit for gravitational constant is:

1. $kg\text{-\hspace{0.17em}}m{\sec }^{-1}$

2. $N{m}^{-1}\sec$

3. $N{m}^{2}k{g}^{-2}$

4. $kgm{\sec }^{-1}$