Practice Work, Power and Energy RRB PYQ questions from Railway examinations, including RRB NTPC PYQ, RRB Group D PYQ, RRB JE PYQ, RRB ALP PYQ and RRB Technician PYQ. This topic-wise Physics question set covers important concepts related to work, power, energy, kinetic energy, potential energy, mechanical energy and the conservation of energy.
The Work, Power and Energy RRB PYQ collection is useful for candidates preparing for Railway examinations and revising important Physics concepts through previous year questions. Questions from this topic can include both conceptual and numerical problems, making regular practice important for improving calculation accuracy and understanding the application of Physics formulas.
Whether you are preparing for RRB NTPC Work, Power and Energy PYQ, RRB Group D Work, Power and Energy PYQ, RRB JE Work, Power and Energy PYQ, RRB ALP Work, Power and Energy PYQ, or RRB Technician Work, Power and Energy PYQ, practice these previous year questions regularly as part of your Railway Physics preparation.
Start practicing Work, Power and Energy RRB PYQs with answers and explanations and strengthen your Railway Physics preparation.
261
An object's speed increases fourfold while its height stays fixed. What happens to its gravitational potential energy?
RRB Group D
15/11/2018 / Shift-II
2018
✓ Answer:AIt stays constant.
U = mgh depends on height, not speed, so it remains unchanged.
262
An object moving at 4 m/s has kinetic energy of 120 J. Find its mass.
RRB Group D; RRB Group D
01/10/2018 / Shift-I; 01/10/2018 / Shift-III
2018
✓ Answer:B15 kg
m = 2K/v² = 240/16 = 15 kg.
263
How is energy converted while cycling?
RRB Group D
05/11/2018 / Shift-II
2018
✓ Answer:BChemical energy to muscular energy, then kinetic energy
The PDF keys the sequence chemical energy → muscular work → kinetic energy.
264
An object moving at 5 m/s has kinetic energy of 25 J. What is its kinetic energy when its speed doubles?