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.
51
A moving car faces wind blowing against its motion. What work does the wind do on the car?
RRB Group D
01/10/2018 / Shift-III
2018
✓ Answer:ANegative
The wind force opposes displacement, giving negative work.
52
A force of 7 N does 56 J of work on an object. Find its displacement.
RRB Group D
08/10/2018 / Shift-III
2018
✓ Answer:C8 m
s = W/F = 56/7 = 8 m.
53
A girl of weight 200 N climbs a tree 2 metres high. Find the work done. (g = 10 m/s²)
RRB Group D; RRB Group D
30/10/2018 / Shift-II; 12/12/2018 / Shift-III
2018
✓ Answer:B400 J
W = weight × height = 200 × 2 = 400 J.
54
The capacity to do work is known as:
RRB ALP & Technician
31/08/2018 / Shift-III
2018
✓ Answer:CEnergy
Energy is the capacity to do work. Its SI unit is the joule.
55
A force of 10 N displaces an object 5 m in its direction. Find the work done.
RRB Group D; RRB Group D
04/10/2018 / Shift-I; 01/11/2018 / Shift-II
2018
✓ Answer:C50 J
W = Fs = 10 × 5 = 50 J.
56
A constant force of 500 N acts along a displacement of 15 km. Calculate the work done.
RRB Group D
13/12/2018 / Shift-II
2018
✓ Answer:C7500000 J
15 km = 15000 m. W = 500 × 15000 = 7500000 J.
57
If net work on a body is positive, its kinetic energy:
RRB Group D
20/09/2018 / Shift-I
2018
✓ Answer:DIncreases
The work-energy theorem gives ΔK = Wnet. Positive net work increases kinetic energy.
58
If force F = 0, what is the work done W?
RRB Group D
31/10/2018 / Shift-III
2018
✓ Answer:B0
W = Fs = 0 × s = 0.
59
A horizontal force of 10 N displaces a 5 kg object 2 m in the force direction. Find the work done.
RRB Group D
20/09/2018 / Shift-III
2018
✓ Answer:A20 J
W = Fs = 10 × 2 = 20 J.
60
In which situation is no work done?
RRB Group D
19/09/2018 / Shift-III
2018
✓ Answer:AKapil stands with a 10 kg load on his shoulder.
The stationary load has zero displacement, so the work done on it is zero.
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