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Kamal Dhungel Answered question 9 January 2022
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The focal length of curved mirror is given by the formula : f=R/2.This focal length is free from refractive index of the medium.
Joining these facts it can be said that focal length of curved mirror doesn’t change if it is immersed in water.

Kamal Dhungel Answered question 9 January 2022
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