Work, energy, and power are fundamental concepts in physics, playing a crucial role in understanding motion, forces, and energy conservation. For NEET aspirants, mastering these topics is essential to solving complex numerical problems efficiently. This mock test presents 20 hard-level multiple-choice questions (MCQs) based on the official NEET 2025 syllabus. It covers work done by forces, kinetic and potential energy, work-energy theorem, collisions, mechanical energy conservation, and power calculations.

NEET 2025 Mock Test: Work, Energy & Power – 20 Tough MCQs

This mock test presents 20 hard-level multiple-choice questions (MCQs) based on the official NEET 2025 syllabus. It covers work done by forces, kinetic and potential energy, work-energy theorem, collisions, mechanical energy conservation, and power calculations.

Attempt these questions to test your knowledge and enhance your NEET preparation! 🚀

Mock Test – Work, Energy, and Power (20 Hard-Level MCQs)

Q. A block of mass m slides on a frictionless surface. A force F acts on it at an angle θ with the horizontal. The work done by F after displacement s is:

(A) Fscosθ

(B) Fssinθ

(C) Fs

(D) Zero

Q. The work done by a variable force is calculated using:

(A) W = ∫ F dx

(B) W = F × s

(C) W = F cosθ × s

(D) W = Fs sinθ

Q. A body of mass m is dropped from a height h. Its kinetic energy just before hitting the ground is:

(A) mgh

(B) ½ mgh

(C) ½ mv²

(D) mg(h²)

Q. Which of the following forces is non-conservative?

(A) Gravitational force

(B) Spring force

(C) Frictional force

(D) Electrostatic force

Q. The potential energy stored in a stretched spring obeys the equation:

(A) PE = ½ kx²

(B) PE = kx

(C) PE = kx²

(D) PE = ½ kx

Q. A bullet of mass m moving with velocity v collides elastically with another identical stationary bullet. After collision, the velocity of the second bullet is:

(A) v

(B) ½ v

(C) 2v

(D) Zero

Q. A person lifts a box of mass 10 kg to a height of 2 m in 5 seconds. What is the power developed?

(A) 40 W

(B) 20 W

(C) 10 W

(D) 4 W

Q. Work done by a centripetal force in uniform circular motion is:

(A) Zero

(B) Positive

(C) Negative

(D) Equal to kinetic energy

Q. The total mechanical energy of a freely falling object remains:

(A) Constant

(B) Zero

(C) Increasing

(D) Decreasing

Q. In an elastic collision, which of the following is conserved?

(A) Kinetic energy only

(B) Momentum only

(C) Both kinetic energy and momentum

(D) Neither kinetic energy nor momentum

Q. A ball is thrown vertically upward. When it reaches its highest point, its:

(A) Kinetic energy is maximum

(B) Potential energy is maximum

(C) Mechanical energy is zero

(D) Acceleration is zero

Q. A pendulum swings back and forth. When it reaches its lowest point, its:

(A) Kinetic energy is maximum

(B) Potential energy is maximum

(C) Mechanical energy is zero

(D) Acceleration is maximum

Q. Which of the following forces do NOT perform work?

(A) Magnetic force

(B) Electrostatic force

(C) Gravitational force

(D) Frictional forc

Q. The velocity of a freely falling object after it falls h meters is given by:

(A) v² = 2gh

(B) v = √2gh

(C) v = gh

(D) v² = gh

Q. A roller coaster moves in a vertical circle. At the topmost point, the normal reaction is:

(A) Maximum

(B) Minimum

(C) Zero

(D) Equal to the weight

Q. A car moving at speed v comes to a stop due to friction. The work done by friction is:

(A) Positive

(B) Negative

(C) Zero

(D) Infinite

Q. Which of the following does not affect the kinetic energy of a moving object?

(A) Mass

(B) Speed

(C) Direction of motion

(D) Work done on the object

Q. If two objects of different masses are moving with the same velocity, their kinetic energy:

(A) Will be equal

(B) Will be higher for heavier mass

(C) Will be higher for lighter mass

(D) Will depend on height

Q. When a force F is applied on an object at an angle θ, the work done is maximum when:

(A) θ = 0°

(B) θ = 45°

(C) θ = 90°

(D) θ = 180°

Q. The rate of work done by a machine is known as:

(A) Energy

(B) Momentum

(C) Power

(D) Velocity

Conclusion

This NEET 2025 mock test on Work, Energy, and Power covers key concepts like elastic and inelastic collisions, work-energy theorem, kinetic and potential energy, power calculations, and mechanical energy conservation. Attempting these challenging MCQs will sharpen your problem-solving skills and prepare you for competitive exams! Keep practicing, and stay tuned for more mock tests, study guides, and detailed explanations on Science Coat! 🚀

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