Question

State an expression for mean deviation for a beam of white light.​

Answer 1

When a beam of white light passes through a  prism, it splits into several colors having different wavelengths.

Explanation:

• This phenomenon of splitting white light is known as dispersion.
• In optical glasses and prism, the phenomenon of deviation is very common.
• The formula for man deviation is given below
• 1/n = Σ |xi- m (X)|
• Here n is the number of wavelengths of light dispersed.

Answer 2

Explanation:

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