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A turnips sits before a thin coverging l...

A turnips sits before a thin coverging lens,outside the focal point of the lens.Teh lens is filled with a transparent gel so that it is flexible by,by squeezing its ends towards its center [as indicated in figure(a)],you can change the curvature of its front and rear sides

Suppsoe that the image must be formed on a card which is at a certain distance behind the lens [figure(b)],while you move the turnip away form the lens,then you should

A

decreases the squeeze of the lens

B

increases the squeeze of the lens

C

keep the card and lens as it is.

D

move the card away form the lens

Text Solution

Verified by Experts

The correct Answer is:
A

As turnipes move away image will also move towards lens.So to form image on card again focal length of lens of be decreases.Therefore squeeze of lens to be decrease.
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