JEE AdvancedPhysicsProperties of MatterMultiple correct+4 / −2
A table tennis ball has radius and mass . It is slowly pushed down into a swimming pool to a depth of below the water surface and then released from rest. It emerges from the water surface at speed , without getting wet, and rises up to a height . Which of the following option(s) is(are) correct? [Given: , density of water , viscosity of water -s.]
- AThe work done in pushing the ball to the depth is .
- BIf we neglect the viscous force in water, then the speed .
- CIf we neglect the viscous force in water, then the height .
- DThe ratio of the magnitudes of the net force excluding the viscous force to the maximum viscous force in water is .
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