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Point object O is placed on the principa...

Point object O is placed on the principal axis of a convex lens of focal length 20cm at a distance of 40 cm to the left of it. The diameter of the lens is 10cm to the right of the lens at a distance h below the principal axis, then the maximum value of h to see the image will be

A

0

B

5cm

C

2.5cm

D

10cm

Text Solution

Verified by Experts

The correct Answer is:
c.
`(h)/(20)=(5)/(40)=(1)/(8)`
or `h=(20)/(8)cm=(5)/(2)cm =2.5cm`
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