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.
251
Find the potential energy of a 20 kg hammer raised 10 m.
RRB Group D
05/10/2018 / Shift-III
2018
✓ Answer:B2000 J
Using g = 10 m/s², U = 20 × 10 × 10 = 2000 J.
252
Which object does not have kinetic energy in the stated condition?
RRB Group D
05/10/2018 / Shift-II
2018
✓ Answer:BA raised hammer
A stationary raised hammer has no kinetic energy.
253
Gravitational potential energy equals:
RRB Group D
18/09/2018 / Shift-III
2018
✓ Answer:Bmgh
U = mgh relative to ground level.
254
A 13 kg object moves at 5 m/s. Find its kinetic energy.
RRB Group D
11/10/2018 / Shift-I
2018
✓ Answer:C162.5 J
K = (1/2) × 13 × 5² = 162.5 J.
255
9800 J of energy is used to lift a 70 kg load. To what height is it raised?
RRB Group D
17/09/2018 / Shift-III
2018
✓ Answer:A14 m
Using g = 10 m/s², h = U/(mg) = 9800/(70 × 10) = 14 m.
256
Find the kinetic energy of a 20 kg object moving at 5 m/s.
RRB Group D
11/12/2018 / Shift-II
2018
✓ Answer:B250 J
K = (1/2) × 20 × 5² = 250 J.
257
Find the potential energy of a 40 kg object lifted 5 m above the ground.
RRB Group D
15/11/2018 / Shift-I
2018
✓ Answer:B2000 J
Using g = 10 m/s², U = 40 × 10 × 5 = 2000 J.
258
Which is the formula for gravitational potential energy?
RRB Group D
23/10/2018 / Shift-III
2018
✓ Answer:BU = mgh
Near the earth's surface, U = mgh relative to the selected zero height.
259
During an object's free fall:
RRB Group D
15/11/2018 / Shift-I
2018
✓ Answer:AKinetic energy increases.
Gravity increases the falling object's speed, so its kinetic energy increases.
260
Which statement about kinetic energy is incorrect?
RRB Group D
12/11/2018 / Shift-II
2018
✓ Answer:AEnergy due to an object's static state is called kinetic energy.
Kinetic energy is energy due to motion, not a stationary state.
Showing 251 – 260 of 298 MCQ Questions | Page 26 of 30