Physics Questions

Q:

Sound can not travel in which of the following medium?

A) Solid B) Liquid
C) Gas D) Vacuum
 
Answer & Explanation Answer: D) Vacuum

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Q:

What is the SI unit of Power?

A) Boyle B) Watt
C) Newton D) Pascal
 
Answer & Explanation Answer: B) Watt

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Q:

What is the SI unit of pressure?

A) Newton B) Weber
C) Pascal D) Henry
 
Answer & Explanation Answer: C) Pascal

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Q:

______ is the perpendicular distance between point of application of force and axis of rotation.

A) Moment arm B) Moment of Inertia
C) Altitude D) Base
 
Answer & Explanation Answer: A) Moment arm

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Q:

For which one of the following, 'Diodes' are generally used for?

A) Rectification B) Amplification
C) Modulation D) Filtration
 
Answer & Explanation Answer: A) Rectification

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Q:

Which of the following pairing is incorrect

A) Hygrometer ­- Water vapour content of the atmosphere B) Lactometer - ­ Specific gravity of liquids
C) Anemometer ­ - Speed of the wind D) Seismograph -­ Earthquakes
 
Answer & Explanation Answer: B) Lactometer - ­ Specific gravity of liquids

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Q:

The material used in electric heater is

A) Tungsten B) Nichrome
C) Brass D) Steel
 
Answer & Explanation Answer: B) Nichrome

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Q:

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

A) Pyrometer B) Thermocouple
C) Thermometer D) Thermistor
 
Answer & Explanation Answer: A) Pyrometer

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