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 can produce virtual images?

  1. Concave lenses
  2. Convex lenses
  3. Concave mirror
  4. Convex mirror
  5. Plane mirror

Select the correct option from codes given below:

[A] 1, 3 & 5 Only
[B] 2, 3 & 5 Only
[C] 1, 2, 3 & 4 Only
[D] 1, 2, 3, 4 & 5

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22. Consider the following statements:

  1. Speed of sound increases with increase in density of the medium
  2. Speed of sound increases with increase in temperature of the medium

   Which of the above statements is/are correct?

[A] 1 Only
[B] 2 Only
[C] Both 1 & 2
[D] Neither 1 nor 2

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23. Who gave the Theory of Relativity?

[A] Isaac Newton
[B] Archimedes
[C] Albert Einstein
[D] Galileo Galilei

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24. Who among the following is credited to work for the unification of electricity, magnetism and optics field of Physics?

[A] James Clerk Maxwell
[B] Michael Faraday
[C] Haris Christian Oersted
[D] Isaac Newton

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25. Which of the following is/are part of the Classical Physics?

[A] Optics
[B] Thermodynamics
[C] Both a and b
[D] None

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26. Electron microscope works on which of the following principles?

[A] Optical interference
[B] Wave Nature of electrons
[C] Motion of charged particle in electromagnetic fields
[D] Faraday’s law of Electromagnetic induction

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27. What is the change in the angular momentum of a system as per the Law of Conservation of Angular momentum, if the total external torque acting is zero?

[A] Remains constant
[B] Becomes zero
[C] Increases exponentially
[D] None of the above

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28. The recoiling of gun is an example of which of the following?

[A] Law of Conservation of Angular Momentum
[B] Law of Conservation of Linear Momentum
[C] Conversion of Kinetic Energy to Potential Energy
[D] Law of Conservation of Energy

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29. Linear momentum can be described in which of the following units?

[A] kgm2/s2
[B] kg/ms2
[C] kg/ms
[D] kgm/s

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30. 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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