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Which of the following causes dispersion?

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in Physics – Class 12 by (135k points)
Which of the following causes dispersion?

(a) Refraction

(b) Reflection

(c) Total internal reflection

(d) Total internal dispersion

This question was addressed to me in an interview.

My doubt stems from Ray Optics topic in portion Ray Optics and Optical Instruments of Physics – Class 12

1 Answer

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Best answer
The correct choice is (a) Refraction

Explanation: The reason is that for a given angle f incidence, the reflection is the same for all the wavelengths of white light while the angle of refraction is different for different wavelengths. Therefore, this is how dispersion is caused.

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