Question

A concave mirror produces four times magnified image of ab object placed at 10 cm in front of the mirror. find the position of image
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Answer 1

Answer:

40 cm

Explanation:

We are given that

Magnification of concave mirror, m=4

Object distance, u=-10cm

We have to find the position of image.

We know that

Magnification of concave mirror, m=$-\frac{v}{u}$

Using the formula

$4=-\frac{v}{-10}$

$4=\frac{v}{10}$

$v=4\times 10$

$v=40cm$

Hence, the image is formed at distance 40 cm behind the mirror.