ExamVeda
Login
Home

Work, Energy and Power MCQ question and answer with solution | Physics Gk MCQs

Learn Work, Energy and Power MCQ Questions and answers with easy and logical explanations in Physics Gk . Work, Energy and Power MCQ question provides all type of technical mcq questions which is important for SSC-CGL, UPPSC, NDA, CDS and all govt examinations Page-2 section-3

Each section contains 100 MCQs on Work, Energy and Power .
11
A porter lifts 500 N up to a distance of 100 meters work done by the porter is-
Discuss
Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
12
A person is sitting in a car which is at rest. The reaction from the road at each of the four wheels of the car is R. When the car runs on a straight level road, how will the reaction at either of the front wheels vary?
Discuss
Answer & Solution
Answer: Option B
Solution:
When the car is at rest, the total weight of the car is evenly distributed among the four wheels.
So, each wheel experiences a reaction force of R.

When the car is moving, the engine provides a forward force.
Due to inertia, there is a tendency for the car's weight to shift towards the rear wheels.
Think about when you accelerate in a car; you feel pushed back into your seat.

This weight shift means that the rear wheels will bear a slightly larger portion of the car's weight.
Consequently, the front wheels will bear a slightly smaller portion of the car's weight.

Therefore, the reaction force at either of the front wheels will be less than R.
The correct answer is Option B.
13
An object with 200 g mass will have momentum with its 10 J kinetic energy-
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
14
Mass × acceleration = ?
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
15
The energy stored in a watch spring is
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
16
If an object of mass m is raised to height h from the ground, force is required for this action. The minimum force required to lift an object is the same as . . . . . . . .
Discuss
Answer & Solution
Answer: Option B
No explanation is given for this question. Let's Discuss on Board
17
Assertion (A) A spring has potential energy, both when it is compressed or stretched.
Reason (R) In compressing or stretching, work is done on the spring against the restoring force.
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board
18
An object of 13kg mass is moving with constant speed of 5m/s, what will be kinetic energy contained in the object?
Discuss
Answer & Solution
Answer: Option C
No explanation is given for this question. Let's Discuss on Board
19
An object of mass 20 kg is moving with an uniform velocity of 5 ms-1. What is the kinetic energy possessed by it?
Discuss
Answer & Solution
Answer: Option D
No explanation is given for this question. Let's Discuss on Board
20
A constant force acts on an object of mass 5 kg for a period of 2 seconds. This increases the velocity of the object from 6 ms-1 to 8 ms-1. Find the amount of force applied.
Discuss
Answer & Solution
Answer: Option A
No explanation is given for this question. Let's Discuss on Board