Physics Questions

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:

If speed of rotation of the earth increases, the weight of the body

A) decreases B)
C) D)
 
Answer & Explanation Answer: A) decreases

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Q:

Calculate the pressure (in Pa) if a thrust of 600 N is applied to an area of 24 sq.m.

A) 144 B) 50
C) 25 D) 72
 
Answer & Explanation Answer: C) 25

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Q:

Choose the most appropriate answer:In which atmospheric layer are the communication satellites located?

A) Stratosphere B) Ionosphere
C) Troposphere D) Mesosphere
 
Answer & Explanation Answer: B) Ionosphere

Explanation:

The communication satellites are located in Ionosphere.

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Q:

The unit of measurement of noise is

A) Decibel B) Hertz
C) Amplifier D) Acoustics
 
Answer & Explanation Answer: A) Decibel

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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:

Find the current (in A) when a charge of 500 Coulomb flows in 25 seconds.

A) 12500 B) 20
C) 40 D) 6250
 
Answer & Explanation Answer: B) 20

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Q:

_________ is a natural electrical phenomenon characterized by the appearance of streamers of reddish or greenish light in the sky, especially near the northern or southern magnetic pole.

A) Acaulis B) Alatus
C) Albopictus D) Aurora
 
Answer & Explanation Answer: D) Aurora

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