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Question -

An object of size 7.0 cm is placed at 27 cm in front of a concave mirror of focal length 18 cm.



Answer -

At what distance from the mirror should a screen be placed so that a sharply focused image can be obtained? Find the size and nature of the image.


Answer-
Object distance (u) = тАУ 27 cm
Object height (h) = 7 cm
Focal length (f) = тАУ 18 cm
According to the mirror formula,

The negative value of image height indicates that the image formed is inverted.

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