Question

an object is placed at a distance of 60 cm from convex lens of focal length 30cm , if object height 3 cm. then find
the position & nature of image.​

Answer 1

Answer:

90 cm and 30 cm

Explanation:

your answer is above.

Answer 2

Here, u = -60 cm, f = 30 cm, h = 3 cm

Image distance can be calculated as follows :

v1−u1=f1

or,    v1+601=−301

or, v1=301−601

=602−1=−601

or, v=60 cm

Now, image height can be calculated as follows :

M=hh′=uv

or,  M=3h′=−6060

or, h′=−3 cm

This shows that image is of the same size. Negative sign shows that image is real and inverted.

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