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

  • Pykometer
  • Polygraph
  • Photometer
  • Periscope
Similar Questions :

1. Which is true

  • In a static liquid at same horizontal level, pressure is more at centre
  • In a static liquid at same horizontal level, pressure is less at centre.
  • In a static liquid at same horizontal level, pressure is same at all points
  • In a static liquid at same horizontal level, pressure is different at all points

2. newton is used to measure

  • Speed
  • Volume
  • Force
  • Area

3. Atmospheric pressure is measured by

  • Tonometer
  • Pyrometer
  • Barometer
  • Thermometer

4. The incident ray, reflected ray and normal to the reflecting surface at the incident point all never lie in same plane.

  • True
  • False

5. What is unit of Viscosity ?

  • coulomb
  • newton second per square meter
  • watt per meter per degree celcius
  • joule per kilogram per Kelvin
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