20 JEE Main 2021 Work Power Energy previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2021 previous-year questions from the Work Power Energy chapter of Physics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Work Power Energy chapter hub.
Two solids A and B of mass 1   kg and 2   kg respectively are moving with equal linear momentum. The ratio of…
A porter lifts a heavy suitcase of mass 80   kg and at the destination lowers it down by a distance of 80   c…
An automobile of mass m accelerates starting from the origin and initially at rest, while the engine supplies constant…
A block moving horizontally on a smooth surface with a speed of 40   m   s - 1 splits into two equal parts. I…
Given below is the plot of a potential energy function U ( x ) for a system, in which a particle is in one dimensional…
The height of victoria's falls is 63   m . What is the difference in the temperature of water at the top and at th…
Two persons A and B perform same amount of work in moving a body through a certain distance d with application of force…
As shown in the figure, a particle of mass 10   kg is placed at a point A . When the particle is slightly displace…
An engine is attached to a wagon through a shock absorber of length 1 . 5   m . The system with a total mass of 40…
A block moving horizontally on a smooth surface with a speed of 40   m   s - 1 splits into two parts with mas…
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