Question

A concave mirror produces 4 times enlarged image of an object placed at 15cm infront of it. Where is the image located and also find its focal length?​

Answer 1

Answer:

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Answer 2

Answer:

Given,

Magnification, m=3

Object distance, u=10cm

We know,

Magnification , m = -v/u

3 = -V/-10

V =30 cm

From mirror formula,

1/f = 1/v + 1/u

1/f = 1/30 - 1/10

= 10 -30 ÷10×30

= - 20 ÷ 300

focal length,f = -15cm

Explanation:

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