Question

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//s` What 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 1

Correct Answer - `0008.00`

`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`