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Which instrument is used in submarine to see the objects above sea level ?

  • Pykometer
  • Polygraph
  • Photometer
  • Periscope
Similar Questions :

1. Force of attraction between the molecules of different substances is called

  • Surface tension
  • Cohensive force
  • Adhesive force
  • None of above

2. The force which opposes the relative motion between different layers of liquid or gases is called

  • Critical Velocity
  • Streamline Flow
  • Terminal Velocity
  • Viscous Force

3. What is refractive index ?

  • it is defined as the ratio of speed of light in the medium to the speed of light in vacuum.
  • it is defined as the ratio of speed of light in vacuum to the speed of light in the medium .
  • it is defined as the product of speed of light in medium and in vacuum.
  • None of above

4. Harry Brearley has invented

  • Electric iron
  • Electromagent
  • Stainless Steel
  • Gramophone

5. Which instrument is used to record physical happenings at a distant place ?

  • Thermostat
  • Tonometer
  • Telemeter
  • Transponder
Read more from - Physics Questions Answers
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