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1)   What is the reason for twinkling of stars ?

  • [A] Dispersion of Light
  • [B] Total Internal Reflection
  • [C] Atmospheric Reflection
  • [D] Atmospheric Refraction

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Atmospheric Refraction

2)   Danger signals are generally red as red light

  • [A] is least bright
  • [B] undergoes least deviation
  • [C] has low velocity
  • [D] gives comfort to eye

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undergoes least deviation

3)   The mass-energy relation is the outcome of

  • [A] Quantum theory
  • [B] General theory of Relativity
  • [C] Field theory of Energy
  • [D] Special theory of Relativity

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Special theory of Relativity

4)   Cryogenics is a science dealing with

  • [A] high temperatures
  • [B] low temperatures
  • [C] friction and wear
  • [D] growth of crystals

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low temperatures

5)   The atmospheric layer reflecting radio waves is called

  • [A] Ozonosphere
  • [B] Ionoshpere
  • [C] Stratosphere
  • [D] Mesosphere

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Ionoshpere

6)   The term Isoneph indicates the lines of equal

  • [A] cloudiness
  • [B] salinity
  • [C] rainfall
  • [D] pressure

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cloudiness

7)   Decibel is the unit used for

  • [A] speed of light
  • [B] intensity of heat
  • [C] intensity of sound
  • [D] radio wave frequency

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intensity of sound

8)   Which of the following laws validates the statement that matter can neither be created nor destroyed ?

  • [A] law of conversation of energy
  • [B] Le Chatelier Principle
  • [C] law of conversation of mass
  • [D] law of osmosis

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law of conversation of mass

9)   Lamberts law is related to

  • [A] Reflection
  • [B] Refraction
  • [C] Interference
  • [D] Illumination

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Illumination

10)   The fourth state of matter is known as

  • [A] Gas
  • [B] Vapour
  • [C] Plasma
  • [D] Electrons

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Plasma

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