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 Physics Questions

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Q:

The quality or tone of a musical sound produced by a stringed instrument depends on

A) frequency of vibration B) length of the strings in the instrument
C) Amplitude of vibration D) waveform of the sound
 
Answer & Explanation Answer: D) waveform of the sound

Explanation:
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Q:

Rotameter is used to measure

A) Vortex flow B) Density of fluids
C) Velocity of fluid in pipes D) Flow of fluids
 
Answer & Explanation Answer: D) Flow of fluids

Explanation:

A rotameter is a flow meter that measures volumetric flow of liquids and gases.

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3 1073
Q:

The energy associated with motion is called

A) Potential energy B) Kinetic energy
C) Both A & B D) Stored energy
 
Answer & Explanation Answer: B) Kinetic energy

Explanation:

Energy can be either potential or kinetic. The energy associated with motion is called Kinetic energy and similarly, the energy associated with position is called Potential energy.

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Q:

The frictional force exerted by fluids is also called ________.

A) drag B) buoyancy
C) upthrust D) convection
 
Answer & Explanation Answer: A) drag

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Q:

Even after sunset, the air near the Earth's surface continue to receive heat due to

A) Insolation B) Terrestrial Radiation
C) Conduction D) Convection
 
Answer & Explanation Answer: B) Terrestrial Radiation

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Q:

Instrument for measuring light intensity is called

A) Lucimeter B) Cryometer
C) Cyanometer D) Barometer
 
Answer & Explanation Answer: A) Lucimeter

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Q:

Current in a conductor can be increased by

A) increasing the voltage across it. B) reducing its resistance.
C) both A and B D) none of the above
 
Answer & Explanation Answer: C) both A and B

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Q:

_______ optical data storage is a technology where data is stored in multiple layers in the optical disc.

A) 3D B) 30D
C) 300D D) 3000D
 
Answer & Explanation Answer: A) 3D

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