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A point source S is placed at a height h...

A point source S is placed at a height h from the bottom of a vessel of height `H(lt h)`. The vessel is polished at the base. Water is polished at the base. Water is gradually filled in the vessel at a constant rate `alpha m^(3)//s`. The distance d of image of the source after reflection from mirror from the bottom of the vessel varies with time t as

A

B

C

D

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B
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DC PANDEY-RAY OPTICS-A. Only one option is correct (JEE Advance)
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