electric current and magnetism - Category wise Question and Answer Practice Test with Solutions

Question : 16

When a body is charged by induction, then the body

a) does not lose any charge

b) loses whole of the charge on it

c) becomes neutral

d) loses part of the charge on it

Question : 17

The primary cell which is used in daily life is

a) Dry cell

b) Daniel cell

c) Leclanche cell

d) Simple voltaic cell

Question : 18 [NDA]

A spherical air bubble is embedded in a piece of glass. For a ray of light passing through the bubble, it behaves like a

a) plano-converging lens

b) converging lens

c) diverging lens

d) plano-diverging len

Question : 19

Electric flux at a point in an electric field is

a) negative

b) zero

c) positive

d) none of these

Question : 20 [NDA]

Which one of the following is the correct angle between the incident and reflected rays when a ray of light incident normally on a plane mirror?

a) 45°

b) 180°

c) 90°

d) 0°