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A convex lens of focal length 30 cm form...

A convex lens of focal length 30 cm forms a real image three times larger than the object on a screen. Object and screen are moved until the image becomes twice the size of the object. If the shift of the object is 6 cm. The shift of screen is

A

36 cm

B

72 cm

C

18 cm

D

9 cm

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The correct Answer is:
A
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DC PANDEY ENGLISH-RAY OPTICS-A. Only one option is correct (JEE Advance)
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