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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, weighing 40 kg, runs up a staircase containing 50 steps in 10 seconds. If each step is 15 cm high, calculate 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 equivalent to one metric horsepower?
(a) 736
(b) 646
(c) 546
(d) 446
Option a – 736
Which of the following is not an example of a perfectly inelastic collision?
(a) Collision between two glass balls
(b) A bullet embedding into a sandbag
(c) An electron captured by a proton
(d) A person jumping onto a moving car
Option a – Collision between two glass balls
Consider the following statements: 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 statements are 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 Matter from nothing violates the law of
(a) Constant proportions
(b) Conservation of Mass-energy
(c) Multiple proportions
(d) Conservation of momentum
Which physical quantity represents the rate at which work is done?
(a) power
(b) Momentum
(c) force
(d) energy
Option a – power
A snowboard is pulled uphill by two ropes at a speed of 5 m/s. If the power used is 3000 W, calculate the applied force.
(a) 50 N
(b) 100 N
(c) 600 N
(d) 15000 N
Option c – 600 N
An object with a Mass of 20 kg is lifted vertically to a height of 2 m. What is the work done against gravity? (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 slope possesses
(a) Kinetic energy only
(b) Only frictional force
(c) Potential energy only
(d) Both kinetic energy and potential energy
Option d – Both kinetic energy and potential energy
A body falls freely from a height of 20 m. After covering 5 m, the body would
(a) Lose one-fourth of its total energy
(b) Lose one-fourth of its potential energy
(c) Gain one-fourth of its potential energy
(d) Gain three-fourths of its total energy
Option b – Lose one-fourth of its potential energy
Assertion (A): A spring has potential energy when compressed or stretched. Reason (R): Compressing or stretching a spring involves work done 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 statement 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, its
(a) Kinetic energy converts into potential energy
(b) Potential energy converts into kinetic energy
(c) Momentum converts into gravitational force
(d) Gravitational force converts into momentum
Option b – Potential energy converts into kinetic energy
During free fall, the decrease in potential energy at any point appears as an equal increase in
(a) Kinetic energy
(b) work done
(c) Heat energy
(d) Gravitational force
Option a – Kinetic energy
When a swing rises to a certain height from rest, which change occurs?
(a) Potential energy decreases, kinetic energy increases
(b) Kinetic energy decreases, potential energy increases
(c) Both potential and kinetic energy decrease
(d) Both potential and kinetic energy increase
Option b – Kinetic energy decreases, potential energy increases
Which of the following does not transform 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 generation, 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 device changes 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, its potential energy is transformed into
(a) Mechanical energy
(b) Heat energy
(c) Chemical energy
(d) Kinetic energy
Option d – Kinetic energy
We covered all the work energy and power NEET Questions above in this post for free so that you can practice well for the exam.
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