Refer to CBSE Class 11 Physics Work Energy and Power MCQs provided below. CBSE Class 11 Physics MCQs with answers available in Pdf for free download. The MCQ Questions for Class 11 Physics with answers have been prepared as per the latest syllabus, CBSE books and examination pattern suggested in Class 11 by CBSE, NCERT and KVS. Multiple Choice Questions for Chapter 6 Work Energy and Power are an important part of exams for Class 11 Physics and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 11 Physics and also download more latest study material for all subjects
MCQ for Class 11 Physics Chapter 6 Work Energy and Power
Class 11 Physics students should refer to the following multiple-choice questions with answers for Chapter 6 Work Energy and Power in Class 11. These MCQ questions with answers for Class 11 Physics will come in exams and help you to score good marks
Chapter 6 Work Energy and Power MCQ Questions Class 11 Physics with Answers
Question: According to work-energy theorem, the work done by the net force on a particle is equal to the change in its
- a) kinetic energy
- b) angular momentum
- c) linear momentum
- d) potential energy
Answer: kinetic energy
Question: A light and a heavy body have equal momentum. Which one has greater K.E.?
- a) The lighter body
- b) The heavier body
- c) Both have equal K.E.
- d) Data given is incomplete
Answer: The lighter body
Question: Kinetic energy, with any reference, must be
- a) positive
- b) zero
- c) negative
- d) None of these
Answer: positive
Question: Work done by a conservative force is positive if
- a) P.E. of the body decreases
- b) K.E. of the body increases
- c) K.E. of the body decreases
- d) P.E. of the body increases
Answer: P.E. of the body decreases
Question: The ...X... energy V(x) of the spring is said to be zero when block and spring system is in the ...Y... position. Here, X and Y refer to
- a) potential, equilibrium
- b) kinetic, equilibrium
- c) mechanical, equilibrium
- d) vibrational, left
Answer: potential, equilibrium
Question: Which of the following must be known in order to determine the power output of an automobile?
- a) Work performed and elapsed time of work
- b) Force exerted and distance of motion
- c) Mass and amount of work performed
- d) Final velocity and height
Answer: Work performed and elapsed time of work
Question: A vehicle is moving with a uniform velocity on a smooth horizontal road, then power delivered by its engine must be
- a) increasing
- b) zero
- c) uniform
- d) decreasing
Answer: increasing
Question: How much water, a pump of 2 kW can raise in one minute to a height of 10 m, take g = 10 m/s2?
- a) 1200
- b) 100
- c) 2000
- d) 1000
Answer: 1200
Question: The engine of a vehicle delivers constant power. If the vehicle is moving up the inclined plane then, its velocity
- a) must remain constant
- b) must increase
- c) must decrease
- d) may increase, decrease or remain same
Answer: must remain constant
Question: A body projected vertically from the earth reaches a height equal to earth's radius before returning to the earth. The power exerted by the gravitational force is greatest
- a) at the instant just before the body hits the earth
- b) at the highest position of the body
- c) it remains constant all through
- d) at the instant just after the body is projected
Answer: at the instant just before the body hits the earth
Question: When the force retards the motion of body, the work done is
- a) negative
- b) zero
- c) positive
- d) None of these
Answer: negative
Question: A man pushes a wall and fails to displace it, he does
- a) no work at all
- b) positive but not maximum work
- c) negative work
- d) maximum positive work
Answer: no work at all
Question: A boy carrying a box on his head is walking on a level road from one place to another is doing no work. This statement is
- a) correct
- b) incorrect
- c) partly correct
- d) cannot say
Answer: correct
Question: No work is done if
- a) All of these
- b) force and displacement are mutually perpendicular
- c) force is zero
- d) displacement is zero
Answer: All of these
Question: A particle is taken round a circle by application of force. The work done by the force is
- a) Zero
- b) positive non–zero
- c) negative non–zero
- d) None of these
Answer: Zero
Question: Assertion : The work done in moving a body over a closed loop is zero for every force in nature.
Reason : Work done depends on nature of force
- a) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
- b) Assertion is correct, reason is incorrect
- c) Assertion is incorrect, reason is correct.
- d) Assertion is correct, reason is correct; reason is a correct explanation for assertion
Answer: Assertion is correct, reason is correct; reason is not a correct explanation for assertion
Question: If a motorcyclist skids and stops after covering a distance of 15 m. The stopping force acting on the motorcycle by the road is 100 N, then the work done by the motorcycle on the road is
- a) Zero
- b) 750J
- c) –1500 J
- d) 1500 J
Answer: Zero
Question: A ball moves in a frictionless inclined table without slipping. The work done by the table surface on the ball is
- a) zero
- b) positive
- c) negative
- d) None of these
Answer: zero
Question: A spring of spring constant 5 × 103 N/m is stretched initially by 5 cm from the unstretched position. Then the work required to stretch it further by another 5 cm is
- a) 18.75 J
- b) 25.00 J
- c) 6.25 J
- d) 12.50 J
Answer: 18.75 J
Question: A boy pushes a toy box 2.0 m along the floor by means of a force of 10 N directed downward at an angle of 60º to the horizontal. The work done by the boy is
- a) 10 J
- b) 12 J
- c) 8 J
- d) 6 J
Answer: 10 J
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CBSE Class 11 Physics Chapter 6 Work Energy and Power MCQs
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MCQs for Physics CBSE Class 11 Chapter 6 Work Energy and Power
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Chapter 6 Work Energy and Power MCQs Physics CBSE Class 11
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Chapter 6 Work Energy and Power CBSE Class 11 MCQs Physics
Regular MCQs practice helps to gain more practice in solving questions to obtain a more comprehensive understanding of Chapter 6 Work Energy and Power concepts. MCQs play an important role in developing understanding of Chapter 6 Work Energy and Power in CBSE Class 11. Students can download and save or print all the MCQs, printable assignments, practice sheets of the above chapter in Class 11 Physics in Pdf format from studiestoday. You can print or read them online on your computer or mobile or any other device. After solving these you should also refer to Class 11 Physics MCQ Test for the same chapter
CBSE MCQs Physics Class 11 Chapter 6 Work Energy and Power
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