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.
81
A worker raises a 15 kg object 1 metre from the ground onto his head. Find the work done. (g = 10 m/s²)
RRB Group D
05/10/2018 / Shift-II
2018
✓ Answer:B150 J
W = mgh = 15 × 10 × 1 = 150 J.
82
A constant force moves an object in its direction. The product of force and displacement is called:
RRB Group D
27/09/2018 / Shift-III
2018
✓ Answer:BWork done
The scalar product of force and displacement is work.
83
A man pulls a trolley with a force of 50 N through 30 m. Find the work done.
RRB Group D
15/11/2018 / Shift-II
2018
✓ Answer:A1500 J
W = Fs = 50 × 30 = 1500 J.
84
Work is possible when there is:
RRB Group D
26/09/2018 / Shift-I
2018
✓ Answer:AForce
The PDF keys force. Mechanical work requires a force and displacement with a component along that force.
85
Work is done on a body only when:
RRB Group D
11/12/2018 / Shift-III
2018
✓ Answer:AIt experiences energy transfer through a mechanical effect.
Mechanical work transfers energy. Force alone or displacement alone is insufficient.
86
A man raises a 13 kg object 1.5 m from the ground onto his head. Find the work done. (g = 10 m/s²)
RRB Group D
05/10/2018 / Shift-I
2018
✓ Answer:A195 J
W = mgh = 13 × 10 × 1.5 = 195 J.
87
If displacement is along the applied force, work done is:
RRB Group D
26/10/2018 / Shift-II
2018
✓ Answer:CPositive
Force and displacement in the same direction give positive work.
88
Find the work done when the angle between force and displacement is 90°.
RRB Group D; RRB Group D
10/12/2018 / Shift-III; 05/11/2018 / Shift-III
2018
✓ Answer:DZero
W = Fs cos 90° = 0.
89
On which of the following does work done not directly depend?
RRB Group D; RRB Group D
09/10/2018 / Shift-II; 03/10/2018 / Shift-III
2018
✓ Answer:BMass of the object
W = Fs cos θ explicitly depends on force, displacement, and their angle, not mass as a separate variable.
90
The ability of an object to do work, or the energy it contains, depends on its:
RRB Group D
16/10/2018 / Shift-I
2018
✓ Answer:CState and condition
The PDF keys state and condition. Energy may arise from motion, position, configuration, or other physical states.
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