Physics MCQs with Answers

The unit of entropy is________________?

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A. J.K

B. J/K
C. N.m/sec
D. Kgm2/sec2.K

The correct answer to the question: “The unit of entropy is________________?” is “J/K”.

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An elevator weighing 3.5 x 10-6 N is raised to a height of 1000 m in the absence of friction, the work done is_________________?

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A. 3.5 x 10-3 J B. 3.5 x 104 J C. 3.5 x 106 J D. 3.5 x 109 J To find the work done in raising the elevator, we can use the formula for work done against gravity: Work=Force×Distance Given: Force (FFF) = 3.5×10−63.5 times 10^{-6}3.5×10−6 N Distance (ddd) = 1000 m Substituting the … Read more

What is the SI unit of acceleration is ___________?

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A. Meter per secound

B. meter per second square
C. Both
D. All

The correct answer to the question: “What is the SI unit of acceleration is ___________?” is “meter per second square”.

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If vectors a and b are antiparallel to each other then their resultant is ___________?

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A. a−b

B. 2b
C. 2a
D. a+b

The correct answer to the question: “If vectors a and b are antiparallel to each other then their resultant is ___________?” is “a−b”.

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If Ax is -ve and Ay is +ve, the resultant is:___________?

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A. 2nd

B. 4th
C. 3rd
D. 1st

The correct answer to the question: “If Ax is -ve and Ay is +ve, the resultant is:___________?” is “2nd”.

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“text”: “2nd”
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A vector which has magnitude one is called _________?

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A. A resultant vector

B. A unit vector
C. A null vector
D. A position vector

The correct answer to the question: “A vector which has magnitude one is called _________?” is “A unit vector”.

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For anti-parallel vectors angle is equal to ____________?

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A. 90°

B. 180°
C. 270°
D. None of these

The correct answer to the question: “For anti-parallel vectors angle is equal to ____________?” is “180°”.

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An example of scalar quantity is _________?

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A. Displacement

B. Speed
C. Velocity
D. Acceleration

The correct answer to the question: “An example of scalar quantity is _________?” is “Speed”.

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The dimension of velocity are __________?

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A. LT

B. LMT
C. LMT^-1
D. LT^-1 

The correct answer to the question: “The dimension of velocity are __________?” is “LT”.

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An electric motor could be used as a: ___________?

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A. Battery

B. Capacitor
C. Dynamo
D. Transformer

The correct answer to the question: “An electric motor could be used as a: ___________?” is “Dynamo”.

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