Physics Practice Question and Answer

Q:

Refraction of light is responsible for:

1602 0

  • 1
    Shadow formation
    Correct
    Wrong
  • 2
    Twinkling of stars
    Correct
    Wrong
  • 3
    Blue color of the sky
    Correct
    Wrong
  • 4
    Rainbow
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "Twinkling of stars"

Q:

When a heated electric bulb glows -

1602 0

  • 1
    Electrical energy is completely converted into light.
    Correct
    Wrong
  • 2
    Electrical energy is partly converted into light energy and partly into heat energy
    Correct
    Wrong
  • 3
    Light energy is converted into electrical energy.
    Correct
    Wrong
  • 4
    Electric energy is converted into magnetic energy .
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "Electrical energy is partly converted into light energy and partly into heat energy "

Q:

What are the conditions for gas like Carbon monoxide to obey the ideal gas laws?

1600 0

  • 1
    Low temperature and low pressure
    Correct
    Wrong
  • 2
    Low temperature and high pressure
    Correct
    Wrong
  • 3
    High temperature and low pressure
    Correct
    Wrong
  • 4
    High temperature and high pressure
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "High temperature and low pressure "
Explanation :

A real gas can behave as an ideal gas if volume of molecule is negligible and interaction between molecule is negligible. This will happen if number of molecule per unit volume is very small. This is only possible at high temperature and low pressure.

Q:

Controls the amount of light entering the eye?

1595 0

  • 1
    Iris
    Correct
    Wrong
  • 2
    pupil
    Correct
    Wrong
  • 3
    lens
    Correct
    Wrong
  • 4
    side muscles
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Iris"

Q:

Is the image formed by a plane mirror always?

1594 0

  • 1
    virtual and vice versa
    Correct
    Wrong
  • 2
    Real and direct
    Correct
    Wrong
  • 3
    direct and virtual
    Correct
    Wrong
  • 4
    Actual
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "direct and virtual"

Q:

What force is used to remove cream from milk?

1594 0

  • 1
    frictional force
    Correct
    Wrong
  • 2
    Centripetal force
    Correct
    Wrong
  • 3
    centrifugal force
    Correct
    Wrong
  • 4
    none of these
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "centrifugal force"

Q:

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

1586 0

  • 1
    Hygrometer
    Correct
    Wrong
  • 2
    Hydrometer
    Correct
    Wrong
  • 3
    Lactometer
    Correct
    Wrong
  • 4
    Barometer
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "Hygrometer"

Q:

What is the color that is used in danger signals?

1585 0

  • 1
    Yellow color
    Correct
    Wrong
  • 2
    Purple color
    Correct
    Wrong
  • 3
    Blue color
    Correct
    Wrong
  • 4
    Red color
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "Red color"

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully