Question

4 cm tall object is placed at the distance of 30 cm front of convex mirror of focal length 20cm find out the position nature and size of the image formed
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Answer 1

Answer:

I KNOW..

The image is real , inverted and of same size as that of object

Image formed at 30cm the same side of object

Explanation:

u = -30 cm

f = -15 cm

1f1u+1v

=> 1v=1f−1u

=> 1v=1−15−1−30

= −115+1302+130

=> 1v=−130

=> v=−30cm

.

m=−vu

=−30−30

=−1

therefore ,

The image is real , inverted and of same size as that of object