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.
341
On which quantity does work done by a given force not directly depend?
RRB Group D; RRB Group D; RRB Group D; RRB Group D; RRB Group D
15/11/2018 / Shift-II; 12/12/2018 / Shift-I; 13/12/2018 / Shift-II; 02/11/2018 / Shift-I; 08/10/2018 / Shift-III
2018
✓ Answer:AInitial velocity of the object
W = Fs cos θ contains no independent initial-velocity term.
342
A worker lifts 10 kg of goods from the ground onto his head 1.1 m above the ground. Find the work done.
RRB Group D
05/10/2018 / Shift-III
2018
✓ Answer:D110 J
Using g = 10 m/s², W = mgh = 10 × 10 × 1.1 = 110 J.
343
A worker raises a 10 kg object 1.2 m from the ground onto his head. Find the work done. (g = 10 m/s²)
RRB Group D
08/10/2018 / Shift-II
2018
✓ Answer:A120 J
W = mgh = 10 × 10 × 1.2 = 120 J.
344
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.
345
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.
346
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.
347
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.
348
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.
349
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.
350
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.
Showing 341 – 350 of 831 MCQ Questions | Page 35 of 84