The decimal number of 16 in binary number is:(A) 1000(B) 10000(C) 1010(D) 11000

The difference between the equatorial diameter and polar diameter of the Earth is about

A. 43km

B. 82km

C. 56km

D. 101km

Explain the working of an electric motor with a neat diagram.

Draw a schematic ray diagram reflecting a telescope showing how rays coming from a distant object are received at eyepieces. Write its two important advantages over a refracting telescope.

The apparent weight of the body in a liquid is

A) V(ρ - ρL)g

B) Vρg

C) VρLg

D) None of these.

State Gauss’ Law in electrostatics. Using the law, derive an expression for the electric field due to a uniformly charged thin spherical shell at a point outside the shell.