## Class 9 MCQ Questions for Chapter 11 Work and Energy with Answers

We have compiled the MCQ Questions for Class 9 Science Chapter 11 Work and Energy with Answers Pdf free download covering the entire syllabus for CBSE Class 9 Science. Practice MCQ Questions for Class 9 Science with Answers on a daily basis and score well in exams. Refer to the Work and Energy Class 9 MCQs Quiz Questions with Answers here along with a detailed explanation.

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# MCQ Questions for Class 9 Science Chapter 11 Work and Energy with Answers

MCQ Questions for Class 9 Science Chapter 11 Work and Energy with Answers

Work And Energy Class 9 MCQ Question 1.
When a body falls freely towards the earth, then its total energy
(a) increases
(b) decreases
(c) remains constant
(d) first increases and then decreases

MCQ On Work And Energy Class 9 Question 2.
A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process the potential energy of the car
(a) does not change
(b) becomes twice to that of initial
(c) becomes 4 times that of initial
(d) becomes 16 times that of initial

Work And Energy Class 9 MCQ With Answers Question 3.
In case of negative work the angle between the force and displacement is (NCERT Exemplar)
(a) 0°
(b) 45°
(c) 90°
(d) 180°

Class 9 Work And Energy MCQ Question 4.
An iron sphere of mass 10 kg has the same diameter as an aluminium sphere of mass is 3.5 kg. Both spheres are dropped simultaneously from a tower. When they are lo m above the ground, they have the same.
(a) acceleration
(b) momenta
(c) potential energy
(d) kinetic energy

Class 9 Science Chapter 11 MCQ Question 5.
A girl is carrying a school bag of 3 kg mass on her back and moves 200 m on a levelled road. The work done against the gravitational force will be (g = 10 ms²)
(a) 6 × 10³ J
(b) 6 J
(c) 0.6 J
(d) zero

MCQ Of Work And Energy Class 9 Question 6.
Which one of the following is not the unit of energy?
(a) joule
(b) newton metre
(c) kilowatt
(d) kilowatt hour

Work And Energy MCQ Class 9 Question 7.
The work done on an object does not depend upon the
(a) displacement
(b) force applied
(c) angle between force and displacement
(d) initial velocity of the object

Answer: (d) initial velocity of the object

Work And Energy Class 9 MCQ Questions With Answers Question 8.
Water stored in a dam possesses
(a) no energy
(b) electrical energy
(c) kinetic energy
(d) potential energy

Class 9 Science Ch 11 MCQ Question 9.
A body is falling from a height h. After it has fallen a height h2, it will possess
(a) only potential energy
(b) only kinetic energy
(c) half potential and half kinetic energy
(d) more kinetic and less potential energy

Answer: (c) half potential and half kinetic energy

MCQ Work And Energy Class 9 Question 10.
The number of joules contained in 1 kWh is
(a) 36 × 105 J
(b) 3.6 × 107 J
(c) 36 × 108 J
(d) 3.7 × 107 J

Answer: (a) 36 × 105 J

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