Mechanics RRB PYQ – Physics Previous Year Questions
Practice Mechanics 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, mass, force, Newton’s laws of motion, momentum, distance, displacement, speed, velocity, acceleration, equations of motion, friction and motion, helping you revise essential Physics concepts for RRB examinations.
Each question includes the correct answer and an explanation to help you understand the concept, strengthen your Physics fundamentals, and revise important Mechanics topics for RRB Railway examinations.
Start practicing Mechanics RRB PYQs and strengthen your Physics preparation.
481
A compressed spring has more energy than a spring of normal length because it has:
RRB ALP & Technician
20/08/2018 / Shift-I
2018
✓ Answer:BPotential energy
Compression stores elastic potential energy.
482
Which energy does a fast-moving car possess?
RRB Group D
19/09/2018 / Shift-II
2018
✓ Answer:DKinetic energy
The moving car has kinetic energy K = (1/2)mv².
483
Two steel balls of masses 5 kg and 10 kg have equal kinetic energy. Which moves faster?
RRB ALP & Technician
30/08/2018 / Shift-I
2018
✓ Answer:BThe 5 kg ball
For fixed K, v = √(2K/m). The smaller mass has the larger speed.
484
Which energy is always positive for a moving object?
RRB Group D
26/10/2018 / Shift-III
2018
✓ Answer:BKinetic energy
K = (1/2)mv² is positive for positive mass and nonzero speed, and zero at rest.
485
When an arrow is released from a drawn bow, the bow's potential energy changes into:
RRB ALP & Technician
30/08/2018 / Shift-I
2018
✓ Answer:BKinetic energy
Stored elastic potential energy is transferred mainly into the arrow's kinetic energy.
486
What is the commercial unit of electrical energy?
RRB Group D
18/09/2018 / Shift-II
2018
✓ Answer:AKilowatt-hour
Electrical consumption is conventionally measured in kWh; one billing unit equals 1 kWh.
487
Which is not an example of potential energy?
RRB ALP & Technician
30/08/2018 / Shift-II
2018
✓ Answer:BFlowing water
Flowing water is identified here by its kinetic energy due to motion.
488
An 8 kg iron ball and a 3 kg aluminium ball are dropped from 20 m. Which quantity is equal for both when they are 10 m above the ground?
RRB Group D
31/10/2018 / Shift-I
2018
✓ Answer:BAcceleration
Neglecting air resistance, both fall with the same gravitational acceleration g regardless of mass.
489
A 2 kg object is thrown upward at 20 m/s. What is its kinetic energy after 2 seconds?
RRB ALP & Technician
09/08/2018 / Shift-II
2018
✓ Answer:B0 J
Using g = 10 m/s², v = u - gt = 20 - 10 × 2 = 0, so K = 0.
490
Find the kinetic energy of a 10 kg bicycle moving at 20 m/s.
RRB Group D
28/09/2018 / Shift-II
2018
✓ Answer:D2000 J
K = (1/2) × 10 × 20² = 2000 J.
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