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Physics

Physics
The atmospheric air is held to the Earth by :

Clouds
Rotation of the Earth
Winds
Gravity

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Physics
The speed of sound in air depends on

Frequency
None of these
Wavelength
Temperature

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Physics
Which of the following phenomenon helps to conclude that light is a transverse wave?

Refraction
Diffraction
Interference
Polarisation

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Physics
Magnetic keepers are used to protect magnets from :

Self-demagnetization
Effect of other magnets
Demagnetization due to heating
Earth's magnetic field

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Physics
The cover of a solar cooker is made of glass because

It retains the heat inside by the green house effect
It rediates heat better than metals
It reflects sun's rays
It absorbs sun's rays

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Physics
Which of the following device is best suited for measuring the temperature inside metallurgical furnaces?

Thermocouple
Thermometer
Pyrometer
Thermistor

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MORE MCQ ON Physics

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