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General Knowledge on Physics | GK Test on Physics Page 6
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Physics

General Knowledge on Physics

(Click on suggested Options to select the answer | Color Red means : Wrong & Green Means: Correct)

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51. Which type/types of pen uses/use capillary action in addition to gravity for flow of ink?
52. When we speak into a microphone what type of vibrations the diaphragm executes?
53. Half portion of a rectangular piece of ice is wrapped with a white piece of cloth while the other half with black one. In this context which one of the following statements is correct?
  • A. Ice melts more easily under white cloth
  • B. Ice melts more easily under black cloth
  • C. No Ice melts at all under the white cloth
  • D. No ice melts at all under the black cloth
  • Check Answer | Discussion
54. Matter waves are
55. The shape of a rain drop is spherical due to
56. Light Emitting Diode (LED) converts?
  • A. light energy into electrical energy
  • B. electrical energy into light energy
  • C. thermal energy into light energy
  • D. mechenical energy into electrical energy
  • Check Answer | Discussion
57. In a pressure cooker, cooking is faster because the increase in vapour pressure
  • A. Increases the specific heat
  • B. decreases the specific heat
  • C. decreases the boiling point
  • D. increases the boiling point
  • Check Answer | Discussion
58. The function of heavy water in a nuclear reactor is to
  • A. slow down the speed of neutrons
  • B. increase the speed of neutrons
  • C. cool down the reactor
  • D. stop the nuclear reaction
  • Check Answer | Discussion
59. Which one of the following has given the centripetal force for a car moving on a road ?
60. A thin pin of iron can be made to float on water-drinking in a bowl . This phenomenon is due to the
  • A. surface tension of water
  • B. viscous nature of water
  • C. presence of ionic bonds in water molecules
  • D. presence of covalent bonds in water molecules
  • Check Answer | Discussion

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