Physics Questions

Q:

Mechanical energy is the sum of

A) kinetic energy + heat energy B) kinetic energy + potential energy
C) potential energy + heat energy D) chemical energy + electrical energy
 
Answer & Explanation Answer: B) kinetic energy + potential energy

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0 1104
Q:

If the momentum of a body is tripled, its KE will

A) become three times its original value B) remain the same
C) become six times its original value D) become nine times its original value
 
Answer & Explanation Answer: D) become nine times its original value

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0 1103
Q:

Find the acceleration (in m/s2) produced in a body of mass 4 kg when a force of 24 N is applied on it.

A) 96 B) 6
C) 12 D) 48
 
Answer & Explanation Answer: B) 6

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0 1100
Q:

A conductor having some appreciable resistance is called a

A) Resistor B) Insulator
C) Conductor D) Semi-conductor
 
Answer & Explanation Answer: A) Resistor

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1 1099
Q:

Acceleration is

A) Inversely proportional to force B) Inversely proportional to mass
C) Directly proportional to mass D) Directly proportional to force
 
Answer & Explanation Answer: D) Directly proportional to force

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0 1098
Q:

The SI unit of momentum is _____________.

A) kilogram-metre per second B) kilogram-metre per second
C) kilogram-metre-second D) kilogram-metre-second squared
 
Answer & Explanation Answer: A) kilogram-metre per second

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1 1097
Q:

A 5 kg object is raised through a height of 4 m. The work done by the force of gravity acting on the object is (take g = 10 m/s2)

 

A) 200j B) 20j
C) -20j D) -200j
 
Answer & Explanation Answer: D) -200j

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0 1096
Q:

Two identical resistors, each of 10 ohm, are connected in parallel. This combination, in turn, is connected to a third resistor of 10 ohm. The equivalent resistance of the combination is ___.

A) 30 ohm B) 5 ohm
C) 15 ohm D) 10 ohm
 
Answer & Explanation Answer: C) 15 ohm

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0 1094