.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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Class 10 science
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2021-11-19T17:13:59+00:00
2021-11-19T17:13:59+00:00 1 Answer
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Answer ( 1 )
Answer: d
Explanation:
(d) The focal length of spherical
mirror does not depends on the
surrounding medium.