Work Energy and Power NEET Questions. We covered all the Work Energy and Power NEET Questions in this post for free so that you can practice well for the exam.
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Mock Test on Work Energy and Power for NEET Students
Mohan, having a mass of 40 kg, runs up a staircase of 50 steps in 10s. If the height of each step is 15 cm, then what is his power? (Take g = 10 m/s²)
(a) 300 W
(b) 100 W
(c) 200 W
(d) 400 W
Option a – 300 W
How many watts are there in metric horsepower?
(a) 736
(b) 646
(c) 546
(d) 446
Option a – 736
Which of the following is not a perfectly inelastic collision?
(a) Striking of two glass balls.
(b) A bullet strikes a bag of sand.
(c) An electron is capt by a proton.
(d) A man jumping onto a moving car.
Option a – Striking of two glass balls
Consider the following sentences. I. In an inelastic collision, only momentum is conserved. II. In an elastic collision, both momentum and kinetic energy are conserved. III. In an inelastic collision, both momentum and kinetic energy are conserved Which of the sentences given above is correct?
(a) I and II
(b) II and III
(c) I and III
(d) I and III
Option a – I and II
The creation of something from nothing is against the law of
(a) constant proportions
(b) conservation of mass-energy
(c) multiple proportions
(d) conservation of momentum
Which of the following physical quantities measures the rate of work done?
(a) Power
(b) Momentum
(c) Force
(d) Energy
Option a – Power
A snowboard pulled up by two-rope travel at the rate of 5 m/sec up a mountain. If 3000 watts of power is used, what force was applied to it?
(a) 50 N
(b) 100 N
(c) 600 N
(d) 15000 N
Option c – 600 N
An object weighing 20 kg is raised through a height of 2m. What will be the work done by the force of gravity in this process? Take g = 10 m/s²
(a) 400 J
(b) 50 J
(c) 40 J
(d) 100 J
Option a – 400 J
A body rolling down a hill has
(a) kinetic energy only.
(b) only friction force.
(c) potential energy only.
(d) Both kinetic energy and potential energy.
Option d – Both kinetic energy and potential energy
A body has a free fall from a height of 20m. After falling through a distance of 5 m, the body would
(a) lose one-fourth of its total energy.
(b) loss of one-fourth of its potential energy.
(c) gain one-fourth of its potential energy.
(d) gain three-fourths of its total energy.
Option b – loss of one-fourth of its potential energy
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. Codes
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are true, but R is not the correct explanation of A
(c) A is true, but R is false
(d) A is false, but R is true
Option a – Both A and R are true and R is the correct explanation of A
Which one of the following statements about energy is correct?
(a) Energy can be created as well as destroyed.
(b) Energy can be created but not destroyed.
(c) Energy can neither be created nor destroyed.
(d) Energy cannot be created but can be destroyed.
Option c – Energy can neither be created nor destroyed
As an object falls freely it’s ………..
(a) kinetic energy gets converted into potential energy
(b) potential energy gets converted into kinetic energy
(c) momentum gets converted into gravitational force
(d) gravitational force gets converted into momentum
Option b – potential energy gets converted into kinetic energy
During the free fall of the object, the decrease in potential energy, at any point in its path, appears as an equal amount of increase in
(a) kinetic energy
(b) work done
(c) heat energy
(d) gravitational force
Option a – kinetic energy
Which one among the following happens when a swing rises to a certain height from its rest positions?
(a) Its potential energy decreases while kinetic energy increases.
(b) Its kinetic energy decreases while potential energy increases.
(c) Both potential and kinetic energy decreases.
(d) Both potential and kinetic energy increase.
Option b – Its kinetic energy decreases while potential energy increases
Which one of the following does not convert electrical energy into light energy?
(a) A candle
(b) A light-emitting diode
(c) A laser
(d) A television set
Option a – A candle
In wind power, which form of energy is converted into electrical energy?
(a) Kinetic energy
(b) Potential energy
(c) Solar energy
(d) Radiant energy
Option a – Kinetic energy
Which of the following devices converts chemical energy into electrical energy?
(a) Electric heater
(b) Electric fan
(c) Hair dryer
(d) Electric cell
Option d – Electric cell
When a compressed slinky is released it converts potential energy into
(a) mechanical energy
(b) heat energy
(c) chemical energy
(d) kinetic energy
Option d – kinetic energy
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