.A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by

Question

(a) 15
(b) 20
(c) 30
(d) 0

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Rohit QNA 3 years 2021-11-19T17:13:59+00:00 1 Answer 70 views Enlightened 0

Answer ( 1 )

    0
    2021-11-19T17:14:14+00:00

    Answer: d
    Explanation:
    (d) The focal length of spherical
    mirror does not depends on the
    surrounding medium.

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