1. Since wavelength of light in a medium of refractive index n decrease by factor n
So , wavelength in glass = wavelenth in air / n
As light travels 2 times through glass sheet , so total distance moved = 2L
No of wavelenth in glass ( Nglass) = distance travelled /wavelenth in medium
Nglass = 2L/ wavelength in glass
Nglass = 2Ln/wavelength in air
will give 2 thumbs up Example 35.5.1 Sample Problem Michelson's interferometer Light of wavelength i =...
1) Two parallel beams of light are brought together on a surface. Each beam has wave length h-500 nm and intensity 1 W/m at the surface. What is the resultant intensity for each of the following path lengths or phase differences between the beams? Phase or path length difference Intensity (W/m) 0 radians (phase) T/2 radians (phase) 60 degrees (phase) 3π radians (phase) 300 nm (path length) 1000 nm (path length) 5.5 λ (path length) 2) A wave of wavelength...