Physics Practice Question and Answer

Q:

What is the most effective conductor of electricity?

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  • 1
    Gold
    Correct
    Wrong
  • 2
    Iron
    Correct
    Wrong
  • 3
    Silver
    Correct
    Wrong
  • 4
    Copper
    Correct
    Wrong
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Answer : 3. "Silver "

Q:

The sky appears blue die to 

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  • 1
    Refraction of light
    Correct
    Wrong
  • 2
    Scattering of light
    Correct
    Wrong
  • 3
    Diffraction of light
    Correct
    Wrong
  • 4
    Reflections of light
    Correct
    Wrong
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Answer : 2. "Scattering of light"

Q:

Sun appears when rising and setting?

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  • 1
    Red
    Correct
    Wrong
  • 2
    Blue
    Correct
    Wrong
  • 3
    Black
    Correct
    Wrong
  • 4
    Yellow
    Correct
    Wrong
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Answer : 1. "Red"

Q:

If the kinetic energy of a satellite is halved, its orbital radius becomes _____

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  • 1
    ½ times
    Correct
    Wrong
  • 2
    2 times
    Correct
    Wrong
  • 3
    4 times
    Correct
    Wrong
  • 4
    Infinity
    Correct
    Wrong
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Answer : 1. "½ times"
Explanation :

radius of its orbit will become half.

Q:

What is the reflection made by a plane mirror?

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  • 1
    Actual
    Correct
    Wrong
  • 2
    Fantasy
    Correct
    Wrong
  • 3
    vice versa
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 2. "Fantasy"

Q:

Do doctors use to check patients' nose, ears, throat etc.?

1325 0

  • 1
    plane mirror
    Correct
    Wrong
  • 2
    convex mirror
    Correct
    Wrong
  • 3
    concave mirror
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "concave mirror"

Q:

In 1962, who published 'The History of Ocean Basins', which outlined the theory of how tectonic plates could move, later called 'sea floor spreading'?

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  • 1
    George Edward Backus
    Correct
    Wrong
  • 2
    Alfred Wegener
    Correct
    Wrong
  • 3
    Louis Bauer
    Correct
    Wrong
  • 4
    Harry Hammond Hess
    Correct
    Wrong
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Answer : 4. "Harry Hammond Hess"
Explanation :

1. In 1962, Harry Hammond Hayes published 'The History of Ocean Basins'.

2. In this, the theory of plate tectonics was outlined and which was later also known as 'ocean bottom spreading'.

Q:

The instrument that measures and records the relative humidity of air is:

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  • 1
    Hygrometer
    Correct
    Wrong
  • 2
    Hydrometer
    Correct
    Wrong
  • 3
    Lactometer
    Correct
    Wrong
  • 4
    Barometer
    Correct
    Wrong
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Answer : 1. "Hygrometer"

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