Physics, asked by jayapadmakumar2015, 9 months ago

an object is placed at a distance of 10cm in front of a concave mirror and its erect and magnified image is formed at a distance of 30cm from the mirror. What is the focal length of the mirror.

Answers

Answered by wanianasir517
1

Explanation:

Soln :-. Given u = -10cm , v= ? , f = -15cm

Applying mirror's formula,1/v +1/u = 1/f

1/v + 1/-10 = 1/-15

1/v = -1/15 + 1/10

=(-2+3)/30

= 1/30

V = 30 cm.

Hence, we get enlarged image, virtual in nature having magnification 3.

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