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Physics quiz 4

Physics quiz 4

natural science that studies matter

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Quiz Questions And Answers

The sky appears blue because of:

Atmospheric water vapour.
Scattering of light.
Reflection on sea water.
Emission of blue wavelength by the sun.

Dynamo is a device for converting:

Heat energy into electrical energy.
Mechanical energy into electrical energy.
Magnetic energy into electrical energy.
Chemical energy into electrical energy.

The working of the quartz crystal in the watch is based on:

Johnson effect
Photoelectric effect
Edison effect
Piezo electric effect

Why does a big fire in the open appear to be fanned by strong winds?

Because of constant circulation of winds over and across the fire.
Because of the dust particles carried by the wind.
Because the surrounding heated air rises and cool air rushes in to create a fanning effect.
None of these

Oil rises up the wick in a lamp because:

oil very light.
of the diffusion of oil through the wick.
of the surface tension phenomenon.
of the capillary action phenomenon.

In the atmosphere ultraviolet rays are absorbed by:

Oxygen
Nitrogen
Ozone
Helium

In which of the following cryogenic engines are used?

Frost-free refrigerators
Sub-marine propulsion
Rockets
Researches in super conductivity

Who propounded the possibility of placing communications satellites in geosynchronous orbit for the first time?

Edwin P Hubble
William Herschel
Arthur C Clarke
Pierre Laplace

What was the name of the space shuttle that landed man on the moon?

Eagle
Columbia
Challenger
Apollo

The energy emitted by the Sun is due to:

Chemical reaction
Nuclear fission
Nuclear fusion
All of the above
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