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.
281
An object is thrown vertically upward. During its ascent, its potential energy _____ and kinetic energy _____.
RRB Group D
20/09/2018 / Shift-II
2018
✓ Answer:AIncreases; decreases
As height increases and speed decreases, potential energy increases and kinetic energy decreases.
282
A 30 kg object moves uniformly at 10 m/s. Find its kinetic energy.
RRB Group D
26/09/2018 / Shift-III
2018
✓ Answer:B1500 J
K = (1/2) × 30 × 10² = 1500 J.
283
During free fall, which energy increases along an object's path?
RRB Group D
19/09/2018 / Shift-II
2018
✓ Answer:BKinetic energy
Gravity increases the object's speed, so its kinetic energy increases.
284
A 30 kg object moves uniformly at 5 m/s. Find its kinetic energy.
RRB Group D
25/09/2018 / Shift-I
2018
✓ Answer:B375 J
K = (1/2) × 30 × 5² = 375 J.
285
A 2 kg block moving at 4 m/s on a horizontal surface compresses a spring until it stops. The kinetic friction force is 15 N and spring constant is 10000 N/m. Find the compression.
RRB Group D
10/12/2018 / Shift-I
2018
✓ Answer:D5.5 cm
Energy balance including friction: (1/2)mv² = (1/2)kx² + 15x, so 16 = 5000x² + 15x. The positive root is about 0.0551 m = 5.5 cm. The PDF's solution omits friction but selects the same approximate option.
286
Potential energy equals:
RRB Group D
20/09/2018 / Shift-I
2018
✓ Answer:Bmgh
Gravitational potential energy is U = mgh.
287
An object has potential energy of 400 J and mass 20 kg. Find its height. (g = 10 m/s²)
RRB Group D
28/09/2018 / Shift-I
2018
✓ Answer:D2 m
h = U/(mg) = 400/(20 × 10) = 2 m.
288
Which form of energy is not generated while riding a bicycle?
RRB ALP & Technician
10/08/2018 / Shift-I
2018
✓ Answer:AChemical energy
Cycling uses stored chemical energy and produces mechanical motion and heat; chemical energy is consumed rather than generated.
289
A 10 kg object moves at 2 m/s. Find its kinetic energy.
RRB Group D
27/09/2018 / Shift-I
2018
✓ Answer:D20 J
K = (1/2) × 10 × 2² = 20 J.
290
A 15 kg hammer is raised 10 m. Find its potential energy.
RRB Group D
05/10/2018 / Shift-I
2018
✓ Answer:A1500 J
Using g = 10 m/s², U = 15 × 10 × 10 = 1500 J.
Showing 281 – 290 of 298 MCQ Questions | Page 29 of 30
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