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G-11 Phys Ch-3

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  • Buoyant force is directed ________.
    upward
  • The atmospheric pressure changes according to _____ and time.
    locality
  • A ________ is used in baling jute, hay, cotton and for shaping steel and metal sheets.
    hydraulic press
  • If the weight of a body is greater than the upward thrust, the body will _____.
    sink
  • A pressure of 760 mm Hg is known as _____ atmospheric pressure.
    standard
  • Manometer is a device used to measure _______.
    pressure difference
  • A ______ is a device for measuring atmospheric pressure.
    barometer
  • The construction of a hydraulic lift is based on _______ law.
    Pascal's
  • The immersed volume of a floating object in a liquid depends on ______ of liquid.
    density
  • If a floating object is in equilibrium, the ______ is equal to its weight.
    upward thrust
  • When a body is immersed in a fluid there is loss in ______.
    weight
  • Nose bleeding sometimes occur at a place of ________ atmospheric pressure.
    low
  • The atmospheric pressure at the plains is ______ than that at the hilly regions.
    higher
  • Liquid and gas are ______.
    fluid
  • The weight of a body when it is immersed in a liquid is called _______.
    apparent weight
  • The net force acting on a body which is immersed in a fluid in upward direction is called _____.
    buoyant force or upward thrust
  • The density of different substances can be determined by using _____.
    Archimedes' principle
  • The pressure depends on the _____ under the surface of the liquid.
    depth
  • Archimedes' principle is true not only for liquids but also for ______.
    gases
  • A _______ which is used to measure blood pressure is a one kind of mercury filled manometer.
    sphygmomanometer
  • The earth is surrounded by the _______ up to a height of many miles.
    atmosphere
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