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A vessel, whose bottom is flat and perfectly reflecting, is filled with water (index=4//3) upto a height = 40 cm . A point object in air above is moving towards the water surface with a constant speed =4 m//sWhat is the relative speed of its final image (in m//s), as seen by the object itself, at a moment when the object is 30 cm above the water surface? |
Answer»  `v_(0)=-4m//s` `v_(i//m)=-muv_(0)` `v_(i//m)=+4//3xx4` `v_(i//m)=+16//3` `v_(i//G)=(V_(i//m))/MU` `v_(i//G)=(+16//3)/(4//3)=4` `v_(i//0)=4-(-4)=8m//s` |
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