Physics MCQs with answers Page - 12

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Q. Rain is falling vertically downwards. To a man running east-wards, the rain will appear to be coming from

  • (A) east
  • (B) west
  • (C) northeast
  • (D) southeast

A

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Q. An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically at a point A on the ground a bomb is released from it. The bomb strikes the ground at point B. The distance AB is

  • (A) 1200 m
  • (B) 0.33 km
  • (C) 3.33 km
  • (D) 33 km

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Q. Which tube used to produce X-ray?

  • (A) Coolidge tube
  • (B) X-ray tube
  • (C) Roentgen
  • (D) None of these

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Q. A Fuse wire is characterised by

  • (A) High resistance and low melting point
  • (B) High resistance and high melting point
  • (C) Low resistance and high melting point
  • (D) Low resistance and low melting point

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Q. When the main switch of the house is put off it disconnects the

  • (A) Live wire only
  • (B) Live wire and the earth wire
  • (C) Live wire and the neutral wire
  • (D) Earth wire and the neutral wire

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Q. Electric power is measured in units of

  • (A) Volt
  • (B) Joule
  • (C) Watt
  • (D) Ampere

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Q. Find the current (in A) when a charge of 500 Coulomb flows in 25 seconds.

  • (A) 12500
  • (B) 20
  • (C) 40
  • (D) 6250

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Q. What is the value of 1 kW = ?

  • (A) 1000 W
  • (B) 10 W
  • (C) 100 W
  • (D) 10000 W

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Q. The electric current in a metal wire is due to the flow of -

  • (A) Electrons
  • (B) Protons
  • (C) Ions
  • (D) Holes

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Q. An electric fuse is based on

  • (A) The chemical effect of the current
  • (B) The magnetic effect of the current
  • (C) The heating effect of the current
  • (D) All of the above

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