Question

The focal length of concave mirror is used in any change in focal length when it is completely immersed in water if not why ​

Answer 1

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The focal length of concave mirror is if is there any change in the focal length when it is completely immersed in water if not why ?

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As there is no change in medium then there is no change in focal length the incident angle I and reflected angle are are same as both Resort travelling in the same medium example water therefore focal length is independent medium

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Answer 2

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HERE IS YOUR ANSWER:--------

AS THERE IS NO CHANGE IN MEDIUM THEN THERE IS NO CHANGE IN FOCAL LENGTH THE INCIDENT ANGLE AND REFLECTED ANGLE ARE SAME AS BITH THE RESORT TRAVELING IN THE SAME MEDIUM EXAMPLE WATER THEREFORE FOCAL LENGTH IS INDEPENDENT MEDIUM.

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