NEET Physics MCQs

A body of mass M is dropped from a height h on a sand floor. If the body penetrates x cm into the sand, the average resistance offered by the sand to the body is

Water is drawn from a well in a 5 kg drum of capacity 55 L by two ropes connected to the top of the drum. The linear mass density of each rope is $0.5{\rm{\;kg}}{{\rm{m}}^{ - 1}}$. The work done in lifting water to the ground from the surface of water in the well 20 m below is $\left[ {{\rm{g}} = 10{\rm{m}}{{\rm{s}}^{ - 2}}} \right]$

A body of mass 10 kg is dropped to the ground from a height of 10 metres. The work done by the gravitational force is $\left( {g = 9.8\;m/{s^2}} \right)$

A body of mass 10 kg is dropped to the ground from a height of 10 metres. The work done by the gravitational force is $\left( {g = 9.8\;m/{s^2}} \right)$

A solid sphere of mass 2 kg rolls on a smooth horizontal surface at 10 ${\rm{m}}{{\rm{s}}^{ - 1}}$. It then rolls up a smooth inclined plane of inclination ${30^0}$ with the horizontal. The height attained by the sphere before it stops is

A ball of mass 2 kg and another of mass 4 kg are dropped together from a 60 feet tall building. After a fall of 30 feet each towards earth, their respective kinetic energies will be in the ratio of

A man carries a load of 50 kg through a height of 40 m in 25 seconds. If the power of the man is 1568 W, his mass is

A uniform chain of length $L$ and mass $M$ is lying on a smooth table and one third of its length is hanging vertically down over the edge of the table. If $g$ is acceleration due to gravity, the work required to pull the hanging part on to the table is

consider a drop of rain water having mass $1\,g$ falling from a height $1\,{\rm{km}}{\rm{.}}$ It hits the ground with a speed of $50\,{\rm{m/s}}.$ Take $g$ constant with a value ${\rm{10}}\,{\rm{m/}}{{\rm{s}}^2}.$ The work done by the (i) gravitational force and the (ii) resistive force of air is