Physics Questions Practice Question and Answer

Q:

What is the farthest point of the normal human eye?

1502 0

  • 1
    is at 25 cm
    Correct
    Wrong
  • 2
    is at infinity
    Correct
    Wrong
  • 3
    is at 25 mm
    Correct
    Wrong
  • 4
    is at 25 m
    Correct
    Wrong
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Answer : 2. "is at infinity"

Q:

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

1501 0

  • 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:

Transformers are used

1499 0

  • 1
    To convert AC into DC
    Correct
    Wrong
  • 2
    To convert DC to AC
    Correct
    Wrong
  • 3
    To detect DC voltage
    Correct
    Wrong
  • 4
    To oxidation or reduce AC voltage
    Correct
    Wrong
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Answer : 4. "To oxidation or reduce AC voltage"

Q:

What constitutes current in a metal wire.

1492 0

  • 1
    neutrons
    Correct
    Wrong
  • 2
    protons
    Correct
    Wrong
  • 3
    electrons
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
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Answer : 3. "electrons"

Q:

Which of the following is a unit of heat?

1490 0

  • 1
    Celsius
    Correct
    Wrong
  • 2
    Calvin
    Correct
    Wrong
  • 3
    Fahrenheit
    Correct
    Wrong
  • 4
    All these
    Correct
    Wrong
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Answer : 4. "All these"

Q:

The velocity of sound in the air (vacuum) is:

1488 0

  • 1
    110 m / sec
    Correct
    Wrong
  • 2
    232 m / sec
    Correct
    Wrong
  • 3
    331 m / sec
    Correct
    Wrong
  • 4
    220 m / sec
    Correct
    Wrong
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Answer : 3. "331 m / sec "

Q:

Gamma rays can cause 

1486 0

  • 1
    burning
    Correct
    Wrong
  • 2
    fever
    Correct
    Wrong
  • 3
    gene mutation
    Correct
    Wrong
  • 4
    sneezing
    Correct
    Wrong
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Answer : 3. "gene mutation "

Q:

When was the international system of units implemented?

1480 0

  • 1
    1965
    Correct
    Wrong
  • 2
    1971
    Correct
    Wrong
  • 3
    1991
    Correct
    Wrong
  • 4
    1985
    Correct
    Wrong
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Answer : 2. "1971"

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