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.
241
A 10 kg object is placed 7 m above the ground. How much energy does it have?
RRB Group D
22/10/2018 / Shift-I
2018
✓ Answer:B686 J
Using g = 9.8 m/s², U = 10 × 9.8 × 7 = 686 J.
242
Which examples have kinetic energy? A. A bullet fired from a gun. B. A fast-moving railway engine. C. A moving simple pendulum.
RRB Group D
25/10/2018 / Shift-II
2018
✓ Answer:DA, B, and C
Each listed object is moving and therefore has kinetic energy.
243
Find the kinetic energy of a 10 kg bicycle moving at 20 m/s.
RRB Group D
28/09/2018 / Shift-II
2018
✓ Answer:D2000 J
K = (1/2) × 10 × 20² = 2000 J.
244
Which energy conversion occurs as rain falls?
RRB Group D
24/10/2018 / Shift-II
2018
✓ Answer:DPotential energy to kinetic energy
Falling rain converts gravitational potential energy into kinetic energy.
245
Find the kinetic energy of a 10 kg object moving at 6 m/s.
RRB Group D
28/09/2018 / Shift-III
2018
✓ Answer:B180 J
K = (1/2) × 10 × 6² = 180 J.
246
A 14 kg object moves at 5 m/s. Find its kinetic energy.
RRB Group D
11/10/2018 / Shift-II
2018
✓ Answer:D175 J
K = (1/2) × 14 × 5² = 175 J.
247
Which energy increases or decreases with height?
RRB Group D
03/10/2018 / Shift-III
2018
✓ Answer:CPotential energy
U = mgh varies directly with height for fixed mass and g.
248
A 20 kg object moves at 10 m/s. Find its kinetic energy.
RRB Group D
05/10/2018 / Shift-III
2018
✓ Answer:B1000 J
K = (1/2) × 20 × 10² = 1000 J.
249
Which does not have kinetic energy in the stated condition?
RRB Group D
08/10/2018 / Shift-II
2018
✓ Answer:CA raised hammer
A stationary raised hammer has potential energy but no kinetic energy.
250
An object has energy of 1500 J and mass 15 kg. Find its height above the ground.
RRB Group D
02/11/2018 / Shift-I
2018
✓ Answer:A10 m
Using g = 10 m/s², h = 1500/(15 × 10) = 10 m.
Showing 241 – 250 of 298 MCQ Questions | Page 25 of 30
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