Physics Questions

Q:

1 kWh = __________ × 106J.

 

A) 36 B)  3.6  
C) 6.4   D) 64
 
Answer & Explanation Answer: B)  3.6  

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Q:

According to Rutherford the radius of the nucleus is about ______ than the radius of the atom.

 

A)  105 times greater B) 105 times lesser
C) 109 times greater D) 107 times greater
 
Answer & Explanation Answer: B) 105 times lesser

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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:

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:

The most suitable unit for expressing nuclear radius is

A) micro B) nanometre
C) fermi D) angstrom
 
Answer & Explanation Answer: C) fermi

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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:

Which of the following is false?

 

Sound waves are ___ waves.

 

A) Pressure B) Longitudinal
C) Electromagnetic D) Mechanical
 
Answer & Explanation Answer: C) Electromagnetic

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