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Q.

An object is kept at an infinite distance from a convex mirror of a focal length of 20 cm. Calculate the distance of the image from the mirror.

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a

40 cm

b

15 cm

c

20 cm

d

10 cm

answer is A.

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Detailed Solution

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In the case of convex mirrors when the object is at infinity, the image is formed at the focal point.

Therefore, the distance of the image from the mirror is 20 cm.

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