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 Physics Questions

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Q:

In hydel power station, the motion produced in turbines is due to

A) flow of water B) burning of coal
C) burning of diesel D) production of steam
 
Answer & Explanation Answer: A) flow of water

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Q:

The SI unit of G, the universal gravitation constant is ______________.

A) N m2 kg2 B) N m2 kg-2
C) N m-2 kg-2 D) N m-2 kg2
 
Answer & Explanation Answer: B) N m2 kg-2

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Q:

In nuclear reactor, cadmium rods are used as which of the following?

A) Fuel B) Moderator  
C) Controller   D) Lubricant
 
Answer & Explanation Answer: C) Controller  

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Q:

Choose the most appropriate answer:Natural radioactivity was discovered by

A) Marie Curie B) Earnest Rutherford
C) Henry Bacquerel D) Enrico Fermi
 
Answer & Explanation Answer: C) Henry Bacquerel

Explanation:

Natural radioactivity was discovered by Henri Bacquerel.

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Q:

What is the unit of relative density?

A) kg/m B) kg/m2
C) kg/m3 D) It has no unit
 
Answer & Explanation Answer: D) It has no unit

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Q:

_________________ through a plane surface is the product of the magnetic flux density normal to the surface and the area of the surface.

A) Magnetic susceptibility B) Magnetic resonance
C) Magnetic flux D) Magnetic pulse
 
Answer & Explanation Answer: C) Magnetic flux

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Q:

Which of the following is NOT an application of Fiber optics?

A) Power Generation B) Computer Networking
C) Sensors D) Power Transmission
 
Answer & Explanation Answer: A) Power Generation

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Q:

At boiling point of liquids , its

A) Temperature increases B) Atmospheric pressure increases
C) Temperature remains constant D) Vapour pressure decreases
 
Answer & Explanation Answer: C) Temperature remains constant

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