MHT CET 2022 Physics question
A monochromic ray of light travels through glass slab and water column. The number of waves in glass slab of thickness 4 cm is same as in water column of height 5 cm. If refractive index of glass is then refractive index of water is
Answer: (A)
Solution
The number of waves in a medium of thickness is , where , so (the same for the same monochromatic source). Equal numbers of waves give t_g$
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