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Physics Quiz 3

  • Control rods used in nuclear reactors are made-up of

    • Stainless steel
    • Graphite
    • Cadmium alloy
    • Plutonium
  • In order to double the period of a simple pendulum

    • Its length should be doubled
    • Its length should be quadrupled
    • The mass of its bob should be doubled
    • The mass of its bob should be quadrupled
  • If the death of a flotation of a ship changes when it sails from the Arabian Sea to the Indian Ocean, it is due to

    • Change of pressure
    • Change the weight of the ship
    • Change in direction
    • Chang in density of seawater
  • Sudden decrease in the barometric pressure indicates

    • stormy weather
    • fine weather
    • wet weather
    • dry weather
  • The lens used rectify long sight is

    • Concave lens
    • Convex lens
    • Plane concave lens
    • Plane convex lens
  • A solar eclipse occurs when

    • the sun, the moon and the earth are not in the same line
    • the moon comes between the sun and the earth
    • The earth comes between the sun and the moon
    • The sun comes between the Earth and the Moon
  • The process in which heat is transmitted without the aid of the intervening medium is

    • Conduction
    • Convection
    • Radiation
    • None of these
  • When the pressure increases, the boiling point rises. the device which uses this principle is

    • Pressure cooker
    • Electric iron
    • Electric heater
    • Manometer
  • Nodes are

    • Position of maximum displacement
    • Positions of no displacement
    • Opposition between no displacement and maximum displacement
    • None of these
  • Transformers are used to

    • Convert AC into DC
    • Convert DC into AC
    • Step up DC voltage
    • Step up or step down voltage

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