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 Physics Questions

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Q:

Which rays cause skin damage?

A) X­-Rays B) UV Rays
C) Infra red rays D) Yellow Rays
 
Answer & Explanation Answer: B) UV Rays

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Q:

Unit of impedance is ___________.

A) ohm B) henry
C) tesla D) hertz
 
Answer & Explanation Answer: A) ohm

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Q:

The unit of which physical quantity is not pascal?

A) Moment of inertia B) Pressure
C) Stress D) Young's modulus
 
Answer & Explanation Answer: A) Moment of inertia

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0 1600
Q:

Instrument used for measuring specific gravity is called _____.

A) Bathymeter B) Cryometer
C) Areometer D) Cymometer
 
Answer & Explanation Answer: C) Areometer

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1 1600
Q:

Cold air is ______.

A) lighter than warm air hence cold air settles down B) heavier than warm air hence cold air rises up
C) lighter than warm air hence cold air rises up   D) heavier than warm air hence cold air settles down  
 
Answer & Explanation Answer: D) heavier than warm air hence cold air settles down  

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Q:

The value of universal gravitation constant (G) was determined by

A) Henry Cavendish B) Antoine L Lavoisier
C) Isaac Newton D) John Dalton
 
Answer & Explanation Answer: A) Henry Cavendish

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0 1596
Q:

If a body slides over a surface, the force resisting the motion between them is called ______.

A) Centripetal force B) Friction
C) Centrifugal force D) Inertia
 
Answer & Explanation Answer: B) Friction

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0 1595
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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