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Q:

One nanometer is

 

A) 10-11 m B) 10-10 m
C) 10-8 m D) 10-9 m
 
Answer & Explanation Answer: D) 10-9 m

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Q:

In which of the following examples will an athlete have maximum accelerated motion?

 

A) Running on an octagonal track B) Running on a hexagonal track
C) Running on a rectangular track D) Running on a circular track
 
Answer & Explanation Answer: D) Running on a circular track

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Q:

Which of the following has highest penetration power?

 

A) α– radiations   B) β– radiations  
C) γ– radiations   D) All have same penetration power.  
 
Answer & Explanation Answer: C) γ– radiations  

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Q:

The product of mass of a body and the acceleration produced in it equals the ___________ acting on it.

 

A) force B) impulse
C) torque D) kinetic energy
 
Answer & Explanation Answer: A) force

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Q:

If the Distance-Time graph is a curve then it represents _______________.

 

A) uniform speed   B) constant displacement  
C) uniform momentum   D) non-uniform speed
 
Answer & Explanation Answer: B) constant displacement  

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Q:

How many millimeters make ten kilometers?

 

A) 1010 B) 109
C) 108 D) 107
 
Answer & Explanation Answer: D) 107

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Q:

In Force equation, F is equal to

 

A) ma B) mv
C) u+at D) mgh
 
Answer & Explanation Answer: A) ma

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Q:

The power of _____________ is expressed in terms of a magnitude on a scale called Richter scale.

 

A) a tornado   B) a volcano  
C) an earthquake   D) a thunderstorm
 
Answer & Explanation Answer: C) an earthquake  

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