Question

A glass slab of thickness 4cm contains the same number of waves as 5cm of watercwhen both are traversed by the monochromatic light .if the refractive index of water is 4/3 .what is that of glass?

Answer 1

Let wavelength in glass=, wavelength in water=

also number of waves in 4cm glass=no.of waves in 5 cm water

Answer 2

Answer:

this is the answer hope it helps u