Work Energy and Power MCQ for NEET. We covered all the Work Energy and Power MCQ for NEET in this post for free so that you can practice well for the exam.
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MCQ on Work Energy and Power for NEET Students
What is the sign of the work done by gravity on a man standing on a platform?
(a) Zero
(b) Positive
(c) Negative
(d) Depends on the particular situation
Option a – Zero
A body at rest can have
(a) speed
(b) energy
(c) momentum
(d) velocity
Option b – energy
What is the sign of the work performed on an object in uniform circular motion?
(a) Zero
(b) Positive
(c) Negative
(d) Depends on the particular situation
Option a – Zero
An object of 2 kg is moving with a velocity of 5 m/s. If its velocity is doubled, the kinetic energy will become
(a) 100 J
(b) 25 J
(c) 200 J
(d) 2.5 J
Option a – 100 J
A mass is kept stationary by an external force. All of the following are true except
(a) the point of application of the force does not move
(b) no work is done on the mass
(c) there is no net force on the mass
(d) the external force may perform work on the mass
A bird flying in the sky has
(a) K.E. only
(b) P.E. only
(c) neither K.E. nor P.E.
(d) both K.E. and P.E.
Option d – both K.E. and P.E.
The sum of the change in kinetic and potential energy is always
(a) zero
(b) positive
(c) negative
(d) None of the above
Option a – zero
A lorry and a car moving with the same K.E. are brought to rest by applying the same retarding force, then
(a) the lorry will come to rest at a shorter distance
(b) the car will come to rest at a shorter distance
(c) both come to rest at the same distance
(d) None of the above
Option c – both come to rest at the same distance
The gravitational potential energy of an object will
(a) increase by increasing the path along which the object is moved
(b) decrease by increasing the path along which the object is moved
(c) not affected by changing the path, provided the overall height is the same
(d) None of these
Option c – not affected by changing the path, provided the overall height is the same
The rate of doing work is termed as
(a) force
(b) mechanical energy
(c) power
(d) momentum
Option c – power
Sun is said to be the ultimate source of energy. Solar energy gets transformed into
(a) chemical energy during photosynthesis
(b) heat energy in drying food grains
(c) electrical energy in solar cells
(d) All of these
Option d – All of these
The potential energy of a freely falling object decreases progressively.
(a) The law of conservation of energy is violated
(b) Potential energy gets converted into kinetic energy progressively
(c) Sum of Potential Energy and Kinetic Energy at any point during the free fall remains constant
(d) Both (b) and (c)
Option d – Both (b) and (c)
When a freely falling object hits the ground, its kinetic energy is
(a) Converted into heat energy
(b) Used to form a crater in the ground
(c) Collides and then rebounds
(d) Any of the three is possible
Option c – Collides and then rebounds
If the velocity of a body is twice the previous velocity, then kinetic energy will become
(a) 2 times
(b) 1/2 times
(c) 4 times
(d) 1 time
Option c – 4 times
An electrical appliance of 500 W is used for 5 hours per day. Energy consumed in 30 days will be
(a) 2.5 kWh
(b) 25 kWh
(c) 75 kWh
(d) None of these
Option c – 75 kWh
The proper care and maintenance of machines require
(a) to make them good looking
(b) preserving them for future
(c) for their efficient and longer use
(d) None of these
Option c – for their efficient and longer use
Solar cookers are used
(a) to cook our food
(b) in artificial satellites
(c) to convert into electrical energy
(d) in drying clothes and other materials
Option a – to cook our food
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