Physics miscellaneous Easy Questions and Answers | Page - 108

Physics miscellaneous

When a strong beam of light is passed through a colloidal solution, the light will

1. be scattered
1. pass unchanged
1. be absorbed
1. be reflected

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When a strong beam of light is passed through a colloidal solution, the light will be scattered.

Correct Option: A

When a strong beam of light is passed through a colloidal solution, the light will be scattered.

Pressure Cooker cooks faster because

1. boiling point decreases with rise of pressure
1. it cooks the food at low pressure
1. higher temperature is attained for cooking
1. the material of the cooker is a good conductor

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In pressure cooker boiling point of water increases due to high pressure.

Correct Option: C

In pressure cooker boiling point of water increases due to high pressure.

Microphone is a device which transforms the

1. sound signal into current signal
1. current signal into sound signal
1. sound signal into light signal
1. light signal into sound signal

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Microphone is a device which transforms the sound signal into current signal.

Correct Option: A

Microphone is a device which transforms the sound signal into current signal.

When two ice cubes are pressed together, they join to form one cube. Which one of the following helps to hold them together?

1. Hydrogen bond formation
1. Vander waals forces
1. Covalent attraction
1. Dipole interaction

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When two ice cubes are pressed together, they join to form one cube due to hydrogen bond.

Correct Option: A

When two ice cubes are pressed together, they join to form one cube due to hydrogen bond.

A star appears twinkling in the sky because of

1. scattering of light by atmosphere
1. reflection of light by atmosphere
1. refraction of light by atmosphere
1. diffraction of light by atmosphere

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A star appears twinkling in the sky because of refraction of light by atmosphere. Light bends when it passes obliquely from one medium to another. This is called refraction of light.

Correct Option: C

A star appears twinkling in the sky because of refraction of light by atmosphere. Light bends when it passes obliquely from one medium to another. This is called refraction of light.