General Science - Physics

Welcome to General Science – Physics MCQ series of GKToday. As of today February 26, 2020, this series has 590 Questions. You may purchase a PDF E-Book compilation comprising all these questions and their answers with explanation from this link.

31. An earth satellite S has an orbit radius which is 2 times that of a communication satellite C. What will be the period of revolution of S?
[A] 1 day
[B] 2 days
[C] 4 days
[D] 8 days

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32. Which of the following strains is produced in a body if the deforming force produces a change in the shape of the body without changing its volume?
[A] Linear
[B] Volumetric
[C] Shearing
[D] All of the above

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33. What is the dimensional formula of Stress?
[A] M 1 L-2 T-2
[B] M 1 L-1 T-1
[C] M 1 L1 T-3
[D] M 1 L-1 T-2

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34. Which of the following statements represent Hooke’s law?
[A] Stress is directly proportional to strain
[B] Stress is inversely proportional to strain
[C] Stress is equal to strain
[D] None of the above

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35. Which of the following factors do not affect the value of modulus of elasticity of a body?
[A] Nature of material
[B] Temperature of the body
[C] Length and volume and of the body
[D] None of the above

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36. What is the S.I unit of Pressure?
[A] N/Kg m2
[B] N/m
[C] N/m3 s
[D] N/m2

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37. Which of the following represents the condition for floatation?
[A] Fb = mg
[B] Fb + mg =0
[C] Fb/ mg =1
[D] Fb = mgh

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38. What do we call the centre of gravity of the liquid displaced by a body?
[A] fluidic centre
[B] meta-centre
[C] centre of buoyancy
[D] None of the above

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39. Why a small liquid drop is in spherical shape?
[A] due to surface tension
[B] due to low viscosity
[C] due to hydrogen bonding
[D] due to low density

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40. Which of the following factors affect the Surface Tension?
[A] Nature of liquid
[B] Area of Surface
[C] Both a and b
[D] None of the above

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