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Physics

Physics
Which of the following produces more severe burns ?

Hot water
Steam
Melting iceberg
Boiling water

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Physics
Conversion of sound energy into electrical energy is done by

Solar cell
Gramophone
Loudspeaker
Microphone

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Physics
The cooling by a desert Cooler is based on:

Evaporative Cooling
Air dehydration
Hot air replacement
Air Rehydration

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Physics
Which of the following instruments is used to measure humidity ?

Clinical Thermometer
Anemometer
Kata Thermometer
Sling Psychrometer

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Physics
A 4 kg object is moving horizontally with a speed of 5 m/s. To increase its speed to 10 m/s, the amount of net work required to be done on this object is:

50 J
100 J
150 J
75 J

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Physics
A gap is left between two rails of a railway track to accommodate...... of the metal.

Volume expansion
Apparent expansion
Areal expansion
Linear expansion

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