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A ray of light travelled from water into the air an angle of incidence of 30°. Calculate;
a) Its speed in water
b) angle of refraction in air. (Refractive index of water = 1.33)
c) Speed of light in air = 3.0 × 10⁸ m/s
hence calculate the critical angle of light in water.​


Sagot :

Answer:

speed = distance/time

just find the speed if it