Work, Energy and Power MCQ question and answer with solution

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Each section contains 100 MCQs on Work, Energy and Power .

Which of the following is not an effect of unbalanced force applied to an object?

A) Change in the speed of an object B) Change in the direction of motion of an object C) Does not cause change in the speed of the object D) Change in the steady state of an object

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

If displacement is horizontal to the applied force, then work done is-

A) Zero B) Negative C) Positive D) Neutral

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

What is represented by the product of force with displacement in the direction of force?

A) Work B) Momentum C) Impulse D) Power

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

If the work done is zero, then the angle between force and displacement is-

A) 0° B) 90° C) 45° D) 30°

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

An object is dropped from a certain height to the ground. When it touches the ground it will contain-

A) Thermal energy B) Chemical energy C) Kinetic energy D) Potential energy

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

If a body is whirled in a circle the work done on it . . . . . . . .

A) is negative B) is zero C) cannot be determined D) is positive

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

When a man pushes a wall but fails to displace it, it does?

A) Positive work B) Negative work C) Most positive work D) No any work

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

If momentum (p) and velocity (v) are given, the formula used to find mass (m) will be:

A) p × v B) $$\frac{p}{v}$$ C) $$\frac{v}{p}$$ D) P + v

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

Which of the following quantity measures the inertia of a body?

A) Mass B) Density C) Temperature D) Volume

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Density of pure water is . . . . . . . . that of saline water.

A) Less than B) Equal to C) More than D) Negligible compared to

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

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Work, Energy and Power MCQ question and answer with solution | Physics Gk MCQs