Physics Practice Question and Answer

Q:

Household appliances based on thermal effect of electric current is-

1446 0

  • 1
    Electric heater
    Correct
    Wrong
  • 2
    Electric bulb
    Correct
    Wrong
  • 3
    Tubelight
    Correct
    Wrong
  • 4
    All of the above
    Correct
    Wrong
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Answer : 4. "All of the above"

Q:

The separation of cream from milk by churning is due to 

1429 0

  • 1
    Cohesive force
    Correct
    Wrong
  • 2
    Centrifugal force
    Correct
    Wrong
  • 3
    Gravitational force
    Correct
    Wrong
  • 4
    None of the above
    Correct
    Wrong
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Answer : 2. "Centrifugal force "

Q:

The width of a mirror is called the mirror?

1401 0

  • 1
    focus
    Correct
    Wrong
  • 2
    Dhruv
    Correct
    Wrong
  • 3
    Asterisks
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "Asterisks"

Q:

Which scientist first melted two pieces of ice by rubbing them together?

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  • 1
    Celsius
    Correct
    Wrong
  • 2
    Joule
    Correct
    Wrong
  • 3
    Davy
    Correct
    Wrong
  • 4
    none of these
    Correct
    Wrong
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Answer : 3. "Davy"

Q:

Which of the following is false?
Sound waves are _________ waves.

1377 0

  • 1
    Pressure
    Correct
    Wrong
  • 2
    Longitudinal
    Correct
    Wrong
  • 3
    Electromagnetic
    Correct
    Wrong
  • 4
    Mechanical
    Correct
    Wrong
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Answer : 2. "Longitudinal"

Q:

The substance which conducts current in the solid state is –

1372 0

  • 1
    iodine
    Correct
    Wrong
  • 2
    sodium chloride
    Correct
    Wrong
  • 3
    diamond
    Correct
    Wrong
  • 4
    graphite
    Correct
    Wrong
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Answer : 4. "graphite "

Q:

The velocity of sound in air is approx.

1349 1

  • 1
    340 m / s
    Correct
    Wrong
  • 2
    330 m / s
    Correct
    Wrong
  • 3
    110 m / s
    Correct
    Wrong
  • 4
    232 m / s
    Correct
    Wrong
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Answer : 2. "330 m / s"

Q:

A typical example of a semiconductor is _______?

1337 0

  • 1
    Platinum
    Correct
    Wrong
  • 2
    Germanium
    Correct
    Wrong
  • 3
    Quartz
    Correct
    Wrong
  • 4
    Mica
    Correct
    Wrong
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Answer : 2. "Germanium"

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