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

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One nanometre is equal to

(1) ${10}^{9}mm$

(2) ${10}^{-6}\text{\hspace{0.17em}}cm$

(3) ${10}^{-7}cm$

(4) ${10}^{-9}cm$

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A micron is related to centimetre as

(1) $1\text{\hspace{0.17em}}micron={10}^{-8}cm$

(2) $1\text{\hspace{0.17em}}micron={10}^{-6}cm$

(3) $1\text{\hspace{0.17em}}micron={10}^{-5}cm$

(4) $1\text{\hspace{0.17em}}micron={10}^{-4}\text{\hspace{0.17em}}cm$

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The unit of power is :

(1) Joule

(2) Joule per second only

(3) Joule per second and watt both

(4) Only watt

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A suitable unit for gravitational constant is

(1) $kg\text{-\hspace{0.17em}}m{\mathrm{sec}}^{-1}$

(2) $N\text{\hspace{0.17em}}{m}^{-1}\mathrm{sec}$

(3) $N\text{\hspace{0.17em}\hspace{0.17em}}{m}^{2}\text{\hspace{0.17em}}k{g}^{-2}$

(4) $kg\text{\hspace{0.17em}}m\text{\hspace{0.17em}}{\mathrm{sec}}^{-1}$

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SI unit of pressure is

(1) Pascal

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

(3) cm of Hg

(4) Atmosphere

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The unit of angular acceleration in the SI system is

(1) $N\text{\hspace{0.17em}}k{g}^{-1}$

(2) $m\text{\hspace{0.17em}}{s}^{-2}$

(3) $rad\text{\hspace{0.17em}}{s}^{-2}$

(4) $m\text{\hspace{0.17em}}k{g}^{-1}K$

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The unit of Stefan's constant $\sigma$ is :                                                  [Only for Droppers]

(1) $W\text{\hspace{0.17em}}{m}^{-2}\text{\hspace{0.17em}}{K}^{-1}$

(2) $W\text{\hspace{0.17em}}{m}^{2}\text{\hspace{0.17em}}{K}^{-4}$

(3) $W\text{\hspace{0.17em}}{m}^{-2}\text{\hspace{0.17em}}{K}^{-4}$

(4) $W\text{\hspace{0.17em}}{m}^{-2}\text{\hspace{0.17em}}{K}^{4}$

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Which of the following is not a unit of energy

(1) $W\text{​-s}$

(2) $kg\text{-}m/\text{​}\mathrm{sec}$

(3) $N\text{​-}m$

(4) Joule

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In $S=a+bt+c{t}^{2}$. S is measured in metres and t in seconds. The unit of c is

(1) None

(2) m

(3) $m{s}^{-1}$

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

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