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

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) $kgm{\sec }^{-1}$

SI unit of pressure is

(1) Pascal

(2) $Dynes/c{m}^2$

(3) cm of Hg

(4) Atmosphere

The unit of angular acceleration in the SI system is 

(1) $Nk{g}^{-1}$

(2) $m{s}^{-2}$

(3) $rad{s}^{-2}$

(4) $mk{g}^{-1}K$

The unit of Stefan's constant $\sigma$ is : [This question includes concepts from Thermal Properties of Matter chapter]

(1) $W{m}^{-2}{K}^{-1}$

(2) $W{m}^2{K}^{-4}$

(3) $W{m}^{-2}{K}^{-4}$

(4) $W{m}^{-2}{K}^4$

Joule-second is the unit of :

(1) Work

(2) Momentum

(3) Pressure

(4) Angular momentum

Unit of energy in SI system is 

(1) Erg

(2) Calorie

(3) Joule

(4) Electron volt