General Science - Physics MCQs

Physics Objective (Multiple Choice) General Knowledge & General Science Questions & Answers for SSC-CGL, UPPSC, UPSC, NDA, CDS and UPSC Civil Services Prelims Examinations.

21. Which of the following represents non-uniform motion?

[A] equal displacements in unequal intervals of time
[B] unequal displacements in unequal intervals of time
[C] equal displacements in equal intervals of time
[D] unequal displacements in equal intervals of time

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22. The magnitude of the resultant of two vectors is maximum in which of the following case?

[A] when vectors act in the same direction
[B] when vectors act in the opposite direction
[C] when vectors act at 90° to each other
[D] None of the above

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23. Which of the following conditions is true for an object to be in equilibrium?

[A] No linear motion of the object
[B] No rotational motion of the object
[C] Minimum potential energy of the object
[D] All of the above

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24. What is the work done by centripetal force in case of Uniform Circular Motion?

[A] 1 joule
[B] 0 joule
[C] Depends on the magnitude of Force
[D] None of the above

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25. What is the maximum height that can be attained by a projectile?

[A] equal to its maximum range
[B] one half of its maximum range
[C] one-fourth of its maximum range
[D] twice of its maximum range

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26. The forces acting at a point are called as:

[A] Collinear forces
[B] Coplanar forces
[C] Concurrent forces
[D] Unit forces

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27. The value of coefficient of limiting friction does not depend on which of the following?

[A] nature of the surfaces in contact
[B] total area of the surfaces in contact
[C] material of the surfaces in contact
[D] All of the above

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28. Which of the following is correct about the coefficient of limiting friction between any two surfaces in contact?

[A] it is equal to twice the tangent of angle of friction
[B] it is equal to twice the sine of angle of friction
[C] it is equal to the tangent of angle of friction
[D] it is equal to the sine of angle of friction

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29. Which of the following is NOT a conservative force?

[A] Electrostatic force
[B] Magnetic force
[C] Force in an elastic spring
[D] Frictional force

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30. The work done in moving a body over a smooth inclined plane does not depend on which of the following?

[A] mass of the body
[B] height of the inclined plane
[C] slope of the inclined plane
[D] All of the above

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