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.
61
A porter raises 12 kg of goods from the ground onto his head 1.5 m above the ground. Find the work done. (g = 10 m/s²)
RRB Group D
04/10/2018 / Shift-II
2018
✓ Answer:C180 J
W = mgh = 12 × 10 × 1.5 = 180 J.
62
An object moves 10 m in the direction of a 10 N force. Find the work done.
RRB Group D
31/10/2018 / Shift-II
2018
✓ Answer:C100 J
W = Fs = 10 × 10 = 100 J.
63
Work done by a force is positive when:
RRB Group D
19/09/2018 / Shift-III
2018
✓ Answer:ADisplacement is in the force direction.
W = Fs cos 0° = Fs > 0 for displacement along the force.
64
A force of 25 N moves an object 5 m in the force direction. Find the work done.
RRB Group D
26/10/2018 / Shift-II
2018
✓ Answer:C125 J
W = Fs = 25 × 5 = 125 J.
65
A force of 50 N displaces an object 10 m in its direction. Find the work done.
RRB Group D
03/12/2018 / Shift-III
2018
✓ Answer:A500 J
W = Fs = 50 × 10 = 500 J.
66
A porter carries a load of 500 N over a distance of 100 metres. Find the work done by the porter.
RRB Group D
06/12/2018 / Shift-I
2018
✓ Answer:C0 N
The PDF keys C and assumes horizontal carrying, for which the supporting force does zero work. The printed options use N rather than J; those units are retained.
67
A man pushes a wall but fails to move it. What work does he do on the wall?
RRB Group D
12/12/2018 / Shift-II
2018
✓ Answer:DNo work
The wall has zero displacement, so work done on it is zero.
68
If an object does not move after a force is applied, we can say that:
RRB Group D
16/11/2018 / Shift-I
2018
✓ Answer:DNo work has been done.
Zero displacement means zero mechanical work on the object.
69
In which case is work not done?
RRB Group D
02/11/2018 / Shift-II
2018
✓ Answer:BA donkey carries a load on its back.
For horizontal carrying at constant height, the vertical supporting force is perpendicular to displacement and does zero work.
70
A person moves 4 metres while applying a constant force of 12 N in that direction. Find the work done.
RRB Group D
12/12/2018 / Shift-I
2018
✓ Answer:C48 J
W = Fs = 12 × 4 = 48 J.
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