1.

A glass prism of refractive index 1.5 is immersed in water then the be of

Answer»

Refractive index of glass prism = 1.5
SPEED of light in VACUUM = 3 × 108 m/s

∴ refractive index =
speed of light in vacuum / speed of light medium

⇒ 1.5 = 3×8 / x
⇒ x = 3 × 108 / 1.5
⇒ x = 2

∴ 2 × 108 m/s is the speed of WATER .



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