Which of the following is not a unit of time?

(1) Second 

(2) minute 

(3) hour 

(4) light year

One astronomical unit is a distance equal to 

(1) 9.46$\times {10}^{15}<mspace\; width="1em"></mspace>m$
$$

(2) $1.496\times {10}^{11}<mspace\; width="1em"></mspace>m$
$$

(3) $3\times {10}^8<mspace\; width="1em"></mspace>m$
$$

(4) $3.08\times {10}^{16<mspace\; width="1em"></mspace>m}$ 

Ampere second is a unit of 

(1) Current 

(2) Charge 

(3) Energy 

(4) Power 

Which of the following is a units that of force?

(1) N m 

(2) mN

(3) nm 

(4) n S

The value of 60$°$ in radian is 

(1) $\frac{\pi }{2}<mspace\; width="1em"></mspace>$

(2) $<mspace\; width="1em"></mspace>\frac{\pi }{3}<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>$

(3) $\frac{\pi }{4}<mspace\; width="1em"></mspace>$

(4) $<mspace\; width="1em"></mspace>\frac{\pi }{5}$

The total plane angle subtended by a circle at its centre is 

(1) $\pi <mspace\; width="1em"></mspace>rad<mspace\; width="1em"></mspace>$

(2) $<mspace\; width="1em"></mspace>2\pi <mspace\; width="1em"></mspace>rad<mspace\; width="1em"></mspace>$

(3) $\frac{2\pi }{3}rad<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>$

(4) $\frac{\pi }{2}rad$

One unified atomic mass represents a mass of magnitude

(1) ${10}^{-30}<mspace\; width="1em"></mspace>Kg<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>$

(2) $1.66<mspace\; width="1em"></mspace>\times {10}^{27}<mspace\; width="1em"></mspace>Kg<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>$

(3) $<mspace\; width="1em"></mspace>1.66\times {10}^{-27}<mspace\; width="1em"></mspace>$

(4)  $Kg<mspace\; width="1em"></mspace>{10}^{33}<mspace\; width="1em"></mspace>Kg$

A far off planet is estimated to be at a distance D from the earth. lf its diametrically opposite extremes subtend an angle at $\theta$ an observation situated on the earth, the approximate diameter of the planet is 

(1) $\frac{\theta }{D}<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>$

(2) $\frac{D}{\mathit{\theta }}<mspace\; width="1em"></mspace>$

(3) $<mspace\; width="1em"></mspace>D\theta <mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>$

(4) $\frac{1}{D\theta }$

lf the average life of a person is taken as 100 s. the age of the universe on this scale is of the order 

(1) ${10}^{10}<mspace\; width="1em"></mspace>s$
$$

(2) ${10}^s<mspace\; width="1em"></mspace>s$
$$

(3) ${10}^{17}<mspace\; width="1em"></mspace>s$
$$

(4) ${10}^9<mspace\; width="1em"></mspace>s$

The order of the magnitude of speed of light in Sl units is 

(1) 16

(2) 8

(3) 4

(4)  7