when an object is placed at a distance of 15 centimetre from a concave mirror its image is formed at 10 centimetre in front of the mirror calculate the focal length of the mirror
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Answer:
6 cm is the focal length
Explanation:
1/f = 1/v + 1/U
1/F = 1/10 + 1/15
1/F = 3/30 + 2/30
1/F = 5/30
F = 30/5
F = 6 CM
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But, the object distances is always negative
also focal length is always negative
your answer is true but how to make this question is wrong
so l solve this question
so please don't worry
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