Questions
Light of different colours propagates through air
a
With the velocity of air
b
With different velocities
c
With the velocity of sound
d
with equal velocities
detailed solution
Correct option is D
In vacuum, the speed of light is independent of wave length. Thus vacuum (or air) is a non dispersive medium in which all colours travel with the same speed.Talk to our academic expert!
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A plane electromagnetic ware travelling in a non-magnetic medium is given by where x is in metre and t is in second. The dielectric constant of the medium is
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