Two waves of light in air have the same wavelength and are intially in phase. They then travel through plastic layers with thickness of `L_(1) = 3.5 mm` and `L_(2) = 5.0 mm` and indices of refraction `n_(1) = 1.7` and `n_(2) = 1.25` as shown in figure. The rays later arrive at a common point. The longest wavelength of light for which constructive interference occurs at the point is

For a certain light, there are 2 xx 10^(3) waves in 1.5 mm in air. The wavelength of light is

A light wave travels through three transparent materials of equal thickness rank in order from the highest to lowest the indices of refraction n_(1),n_(2) and n_(3) .

A light wave travels through three transparent materials of equal thickness rank in order from the highest to lowest the indices of refraction n_(1),n_(2) and n_(3) .

A light wave travels through three transparent materials of equal thickness rank in order from the highest to lowest the indices of refraction n_(1),n_(2) and n_(3) .

Two light waves having the same wavelength lambda in vacuum are in phase initially. Then the first ray travels a path of length L_(1) through a medium of refractive index mu_(1) . Then second ray travels a path of length L_(2) throug a medium of refractive index mu_(2) . The two waves are then combined to observed interference effects. The phase difference between the two, when they interfere, is

Two light waves having the same wavelength lambda in vacuum are in phase initially. Then the first ray travels a path of length L_(1) through a medium of refractive index mu_(1) . Then second ray travels a path of length L_(2) throug a medium of refractive index mu_(2) . The two waves are then combined to observed interference effects. The phase difference between the two, when they interfere, is