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 Physics Questions

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Q:

Knife is an example for

A) Lever B) Wedge
C) Inclined plane D) Pulley
 
Answer & Explanation Answer: B) Wedge

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2 1081
Q:

Which of the following does NOT contribute to sparkling of diamonds?

A) Total Internal Reflection B) High Refractive Index of Diamonds
C) Dispersion D) Low Refractive Index of Diamonds
 
Answer & Explanation Answer: D) Low Refractive Index of Diamonds

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0 1079
Q:

During the free fall of the object, the decrease in potential energy, at any point in its path, appears as an equal amount of increase in _________________.

 

A) kinetic energy B) work done
C) heat energy D) gravitational force
 
Answer & Explanation Answer: A) kinetic energy

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3 1077
Q:

One Watt = ?

A) 1 Joule/sec B) 1 erg/sec
C) 1 Pascal/sec D) 1 m/s
 
Answer & Explanation Answer: A) 1 Joule/sec

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0 1075
Q:

Mechanical energy is equal to

A) Kinetic energy + Chemical energy B) Kinetic energy + Potential energy
C) Kinetic energy + Heat energy D) Kinetic energy + Electrical energy
 
Answer & Explanation Answer: B) Kinetic energy + Potential energy

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1 1068
Q:

Calculate the time period (in seconds) of a sound wave of wavelength 5m travelling with a speed of 500 m/s.

 

A) 0.01 B) 2500
C) 0.02 D) 1250
 
Answer & Explanation Answer: A) 0.01

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2 1068
Q:

Astronauts inside spaceship feel ___ weight.

A) More B) Less
C) Zero D) Depends on G force
 
Answer & Explanation Answer: C) Zero

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2 1064
Q:

The sensation of sound persists in the human brain for about:

A) 0.5 sec B) 0.2 sec
C) 0.1 sec D) 1 sec
 
Answer & Explanation Answer: C) 0.1 sec

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