A glass plate 365 mm thick with an index of refraction of 16

A glass plate 3.65 mm thick, with an index of refraction of 1.65, is placed between a point source of light with wavelength 520 nm (in vacuum) and a screen. The distance from source to screen is 1.25 cm .

How many wavelengths are there between the source and the screen?

Number of wavelengths

= 3.65 mm / (520 nm / 1.65) + (1.25 cm – 3.65 mm)/520 nm

= 11582 + 17019

Number of wavelengths = 28601

$A glass plate 3.65 mm thick, with an index of refraction of 1.65, is placed between a point source of light with wavelength 520 nm (in vacuum) and a screen. The$

A glass plate 365 mm thick with an index of refraction of 16

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