Physics · 2023
JEE Main · 6 April 2023, Shift 2 · Q51
A body is dropped on ground from a height ' h_1 ' and after hitting the ground, it rebounds to a height ' h_2 '. If the ratio of velocities of the…
A body is dropped on ground from a height ' $\displaystyle h_1$ ' and after hitting the ground, it rebounds to a height ' $\displaystyle h_2$ '. If the ratio of velocities of the body just before and after hitting ground is $\displaystyle 4$ , then percentage loss in kinetic energy of the body is $\displaystyle \frac{x}{4}$. The value of $\displaystyle x$ is $\displaystyle \_\_\_\_$.
Official answer
From NTA’s final answer key for this paper.
375
More from Work, Power and Energy
- A particle is placed at the point A of a frictionless track A B C as shown in figure. It is gently pushed towards right. The speed of the particle…2024
- A particle of mass m moves on a straight line with its velocity increasing with distance according to the equation v=α √x, where α is a constant. The…2024
- Two bodies are having kinetic energies in the ratio 16: 9. If they have same linear momentum, the ratio of their masses respectively is:2023
- A block of mass 100 kg slides over a distance of 10 m on a horizontal surface. If the co-efficient of friction between the surfaces is 0.4, then the…2024
- Four particles A, B, C, D of mass m/2, m, 2 m, 4 m, have same momentum, respectively. The particle with maximum kinetic energy is:2024
- If the maximum load carried by an elevator is 1400 kg ( 600 kg - Passengers +800 kg - elevator), which is moving up with a uniform speed of 3 m s^-1…2023
- A block of mass 10 kg is moving along x -axis under the action of force F=5 x N. The work done by the force in moving the block from x=2 m to 4 m…2023
- A body of mass 2 kg begins to move under the influence of time dependent force F=(2 t i+6 t^2 j) N, where i and j are unit vectors along x and y…2026
JEE Main 2023 Physics question, with the answer from NTA’s final answer key. Where our answers come from.