Q. 5 C4.2( 69 Votes )

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Answer :

According to the question;

Focal length (f) = -10cm;

Length of stick (Lo) = 10cm;

Length of image = Li;

Object distance (u) = -20cm;

By mirror formula;

v = -20.

Since v = - 20 cm which is negative hence image is at left side of mirror.


Magnification = =

Putting values of v and u .

Magnification =


Negative sign means image is inverted.

Hence Li = Lo .

Hence length of image is 10 cm

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