Final Physics Daily Quiz 3

(a) linearly with square root of time

(b) linearly with time.

(c) linearly with square of time.

(d) inversely with time.

(a) Convex mirrors are used by doctors to examine oral cavity

(b) Concave mirrors are used as reflectors

(c) Convex mirrors are used as reflectors

(d) Convex mirrors should be used for shaving

(a) ultrasonic waves from the bat.

(b) ultrasonic waves from the distant objects.

(c) supersonic waves from the bat .

(d) supersonic waves from the distant objects.

(a) refractive index of air is less than that of glass.

(b) refractive index of air is greater than that of glass.

(c) density of glass is greater than that of air.

(d) density of glass is less than that of air.

(a) must be convergent 

(b) must be divergent .

(c) must be parallel to each other.

(d) intersect .