Question

A beamof red light has an amplitude 2.5 times the amplitude of second beam of the same colour calculate the ration of the intesities of two wenes

Answer 1

Answer:

Red light 1 = 2.5 x

Red light 2= x

Intensity ratio = (2.5)^2/1

= 6.25

as intensity directly proportional to (amplitude)^2

hope this will help you.