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Q:

A body of mass 3 kg accelerates from 10 m/s to 20 m/s in 5 seconds due to the application of a force on it. Calculate the magnitude of this force (in N).

 

A) 6 B) 18
C) 12 D) 36
 
Answer & Explanation Answer: A) 6

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Filed Under: Physics
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Q:

What will be the force of attraction between two bodies weighing 20 kg and 50 kg, respectively, with a distance of 2 metre between them?

 

A) 16.675 x 10-11 N B) 166.75 x 10-10 N
C) 6.67 x 10-11 N D) 16.67 x 5-10 N
 
Answer & Explanation Answer: B) 166.75 x 10-10 N

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Q:

An object weighing 20 kg is raised through a height of 2 m. What will be the work done by the force of gravity in this process?

A) 400 J B) 50 J
C) 40 J D) 100 J
 
Answer & Explanation Answer: A) 400 J

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Q:

Which of the following is not true about Frictional force?

 

A) Friction is the force which opposes the relative motion of two surfaces in contact B) The force of friction that acts when a body is moving (sliding) on a surface is called sliding friction
C) Friction in machines wastes energy and also causes wear and tear D) Rolling friction is much more than sliding friction, the use of ball bearings in a machine considerably reduces friction
 
Answer & Explanation Answer: D) Rolling friction is much more than sliding friction, the use of ball bearings in a machine considerably reduces friction

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Q:

The gravitational force of attraction between two bodies is ____________________ the distance between the two bodies.

 

A) inversely proportional to the B) directly proportional to the square of  
C) inversely proportional to the square of   D) directly proportional to the
 
Answer & Explanation Answer: C) inversely proportional to the square of  

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Q:

An assertion (A) and a Reason (R) are given below.

 

Assertion (A) : The Indian Constitution came into force with effect from 26th January 1950.

 

Reason (R) : 26th January is celebrated as the Republic day.

 

A) A is true but R is false B) A is false but R is true
C) Both A and R are false D) Both A and R are true but R is not the correct explanation of A
 
Answer & Explanation Answer: D) Both A and R are true but R is not the correct explanation of A

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Filed Under: Statement and Conclusions
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Q:

The force ultimately responsible for mass movement

A) erosion B) gravity
C) deposition D) weathering
 
Answer & Explanation Answer: B) gravity

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Q:

Who is the current supreme commander of Indian Defense forces?

A) Narendra Modi B) Sumitra Mahajan
C) Pranab Mukherjee D) Lt. Gen Dalbir Singh
 
Answer & Explanation Answer: C) Pranab Mukherjee

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Filed Under: Indian Politics
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