Question

An object of height 2 cm is placed at a distance of 30 cm from a convex lens of focal length 10

cm. Find the position, nature and height of the object.
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Answer 1

Explanation:

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Answer 2

Answer:

height of object=2

1/f=1/v-1/u

1/10=1/30-1/-u

1/10-1/30=1/u

2/30=1/u

1/15=1/u

u=15cm

v/u=h of object /height of images

30/15=2/h

h=1cm

nature of image diminished,virtual,erect