# 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.

41. An orbital velocity of a satellite does not depend on which of the following?

[A] Radius of the planet
[B] Mass of the planet
[C] Radius of orbit
[D] Mass of the satellite

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42. What happens to the orbital velocity of a satellite when the radius of orbit is increased?

[A] it decreases
[B] it increases
[C] it remains same
[D] None of the above

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43. Which of the following states of matter has the weakest Intermolecular forces?

[A] Solids
[B] Liquids
[C] Gases
[D] It is same in solids, liquids and gases

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44. What is the fourth state of matter called?

[A] Solid
[B] Liquid
[C] Gas
[D] Plasma

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45. What is the internal restoring force acting per unit area of cross section of the deformed body called?

[A] Strain
[B] Stress
[C] Pressure
[D] Surface Tension

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46. 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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47. What is Young’s Modulus?

[A] ratio of longitudinal strain to normal stress
[B] product of normal stress of longitudinal strain
[C] ratio of normal stress to longitudinal strain
[D] ratio of normal stress to lateral strain

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48. What do we call the strain produced in a body when the deforming force produces a change in its shape without changing its volume?

[A] Linear Strain
[B] Volumetric Strain
[C] Shearing strain
[D] Thermal Strain

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49. What is the device used to measure the flow speed of incompressible called as?

[A] Torri-meter
[B] Bernoulli-meter
[C] Hydro-meter
[D] Venturi-meter

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50. What happens to a body when its density is equal to the density of the fluid?

[A] it floats
[B] it sinks
[C] it remains suspended
[D] None of the above

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