Question

An object in placed at a distance of 20cm from a convex mirror of focal length 30cm then find the position and nature of image
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Answer 1

Answer:

V=11.111cm ( image position)

Explanation:

u(object distance) = -20cm ( negative sign due to presence of object opposite to the direction of rays)

f(focal length) =+25cm (convex mirror has always positive focal length)

By mirror formula

1/f=1/v+1/u

1/25=-1/20+1/v

1/25+1/20=1/v

(4+5)/100=1/v

9/100=1/v

V=100/9

V=11.111cm ( image position)

Position of the image is behind the mirror since v comes out to be positive and the image is small in nature.

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Answer 2

Answer:

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