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Test:- Work And Energy ( Chapter 11 ) - Class 10 MCQ


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10 Questions MCQ Test - Test:- Work And Energy ( Chapter 11 )

Test:- Work And Energy ( Chapter 11 ) for Class 10 2024 is part of Class 10 preparation. The Test:- Work And Energy ( Chapter 11 ) questions and answers have been prepared according to the Class 10 exam syllabus.The Test:- Work And Energy ( Chapter 11 ) MCQs are made for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test:- Work And Energy ( Chapter 11 ) below.
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Test:- Work And Energy ( Chapter 11 ) - Question 1

A man is carrying the heavy luggage from one platform to the other of a Railway station but still according to the logics of science his work done is said to be zero. Can you opt out the correct reason?

Detailed Solution for Test:- Work And Energy ( Chapter 11 ) - Question 1

 (b) The force is acting perpendicular to the direction of displacement of luggage

Test:- Work And Energy ( Chapter 11 ) - Question 2

When a body falls freely towards the earth, then its total energy

Detailed Solution for Test:- Work And Energy ( Chapter 11 ) - Question 2

Remain constant

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Test:- Work And Energy ( Chapter 11 ) - Question 3

When a body like earth is moving in a circular path the work done in that case is zero because:

Detailed Solution for Test:- Work And Energy ( Chapter 11 ) - Question 3

The work done on a body moving in a circular path is also zero. This is becausewhen a body moves in a circular path, then the centripetal force acts along the radius of the circle, and it is at right angles to the motion of the body. Thus, the work done in the case of moon moving round the earth is also zero.

Test:- Work And Energy ( Chapter 11 ) - Question 4

 A car is accelerated on a leveled road and attains a velocity 4 times of its initial velocity. In this process, the kinetic energy of the car

Detailed Solution for Test:- Work And Energy ( Chapter 11 ) - Question 4

b) 16 times to that of the initial

Test:- Work And Energy ( Chapter 11 ) - Question 5

The momentum of a bullet of mass 20 g fired from a gun is 10 kg m/s. The kinetic energy of this bullet in kJ will be:

Detailed Solution for Test:- Work And Energy ( Chapter 11 ) - Question 5

b) 2.5

Test:- Work And Energy ( Chapter 11 ) - Question 6

 In the dams water is stored in the high reservoirs and then made to fall down. This falling water then rotates the turbines to generate electricity. In this energy conversion process can you tell the initial and final energies respectively?

Detailed Solution for Test:- Work And Energy ( Chapter 11 ) - Question 6

a) Kinetic energy and electrical energy

Test:- Work And Energy ( Chapter 11 ) - Question 7

Two objects of masses 1 × 10-3kg and 4 × 10-3 kg have equal momentum. What is the ratio of their kinetic energies?

Detailed Solution for Test:- Work And Energy ( Chapter 11 ) - Question 7

b)4:1

Test:- Work And Energy ( Chapter 11 ) - Question 8

An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass 3.5 kg. Both spheres are dropped simultaneously from a tower. When they are 10 m above the ground, they have the same:

Detailed Solution for Test:- Work And Energy ( Chapter 11 ) - Question 8

a) Acceleration

Test:- Work And Energy ( Chapter 11 ) - Question 9

Which of the following energy change involves frictional force?

Detailed Solution for Test:- Work And Energy ( Chapter 11 ) - Question 9

C) Kenergy to heat energy

Test:- Work And Energy ( Chapter 11 ) - Question 10

The work done on an object does not depend upon the:

Detailed Solution for Test:- Work And Energy ( Chapter 11 ) - Question 10

a) Initial velocity of the object

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