Question

four different colours ABCD of lights are incident at the same angle on one of the pieces of Glass prisms ab and the most and event the least which colour has minimum wavelength along all​

Answer 1

Answer:

Violet light gets displaced the most as the wavelength of violet light is less which implies that the speed of the violet light is very less.

Red light gets displaced the least as the wavelength of red light more which implies that the speed of the red light is more.

The increased deviations of each light takes place in this order: Red < Orange < Yellow < Green < Blue < Indigo < Violet.

Explanation:

Velocity of the light = Frequency × Wavelength

So, as Wavelength increases, the velocity also increases which implies that the refractive index decreases.

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