Physics Questions

Q:

Which one among the following components can not be developed within an "integrated circuit"?

A) Diode B) Triode
C) Transformer D) Transistor
 
Answer & Explanation Answer: C) Transformer

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Q:

Cryogenics is a branch of Physics that deal with ______.

A) very high temperatures B) very low temperatures
C) growth of extremely small crystals D) growth of extremely large crystals
 
Answer & Explanation Answer: B) very low temperatures

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Q:

A wooden block of mass m1 kg accelerates at m/s when a force of 5 N acts on it. Another block of mass m2 kg accelerates at 20 m/s when the same force acts on it. If both the blocks are tied together and the same force acts on their combination, the acceleration will be about

 

A) 6.67 m/s2 B) 1.67 m/s2
C) 5.67 m/s2 D) 4.67 m/s2
 
Answer & Explanation Answer: A) 6.67 m/s2

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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:

A body of mass 2 kg is thrown upward with initial velocity of 20 m/s. After 2 seconds, its kinetic energy will be : (g = 10 m/sq.s)

A) 0J B) 200J
C) 400J D) 100J
 
Answer & Explanation Answer: A) 0J

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Q:

Find the acceleration (in m/s2) of a body which accelerates from 10 m/s to 20 m/s in 4 seconds.

A) 7.5 B) 15
C) 5 D) 2.5
 
Answer & Explanation Answer: D) 2.5

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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:

A body is initially moving with a velocity of 5 m/s. It undergoes an acceleration of 2 m/s2 for 4 seconds. Find the displacement (in m) of this body in these 4seconds.

A) 4 B) 72
C) 36 D) 8
 
Answer & Explanation Answer: C) 36

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