Physics Questions

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:

Fill in the blank with the most appropriate option.

 

The Universal Constant of Gravitation is ___.

 

A) 6.67 x 1010 Nm2/kg2 B) 6.67 x 10-10 Nm2/kg2
C) 6.67 x 10-11 Nm2/kg2 D) 9.8 Nm2/kg2
 
Answer & Explanation Answer: C) 6.67 x 10-11 Nm2/kg2

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Q:

Find the acceleration (in m/s2) of a body which accelerates from 15 m/s to 40 m/s in 2 seconds.

 

A) 12.5 B) 27.5  
C) 25 D) 55
 
Answer & Explanation Answer: A) 12.5

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Q:

The gravitational force of attraction between two bodies is __________________ the product of their masses.

 

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

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Q:

____ is not an example of refraction of light.

 

A) Twinkling effect of stars B) Mirages
C) Lateral inversion D) Bending of light while passing through a medium
 
Answer & Explanation Answer: C) Lateral inversion

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Q:

Find the potential energy gained by a body of mass 60 kg, if it is raised by 12 m. (use g = 10 m/s2)

 

A) 7200 B) 50
C) 3600 D) 25
 
Answer & Explanation Answer: A) 7200

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Q:

Quantitatively, the inertia of an object is measured by ______________.

 

A) its weight B) the product of its mass and velocity
C) its mass D) the product of its mass and acceleration
 
Answer & Explanation Answer: C) its mass

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Q:

The speed of sound in air at 0°is

 

A) 331 m/s B) 330 m/s
C) 330 ms D) 331 ms
 
Answer & Explanation Answer: A) 331 m/s

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