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 Physics Questions

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Q:

Which of the following is NOT an example of potential energy?

A) Running water B) Water stored in a dam
C) A raised hammer D) A compressed spring
 
Answer & Explanation Answer: A) Running water

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Q:

Light can travel ___ km in a year.

A) 5 billion B) 10 billion
C) 5 trillion D) 10 trillion
 
Answer & Explanation Answer: D) 10 trillion

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Q:

What is the measure of temperature considered as normal in human body?

A) 95 deg F B) 97 deg F
C) 98.6 deg F D) 96.8 deg F
 
Answer & Explanation Answer: C) 98.6 deg F

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Q:

A lens has a power +2.0 D. The type of lens and its focal length will be

A) Concave, -0.5 m B) Convex, 0.5 m
C) Concave, 0.5 m D) Convex, -0.5 m
 
Answer & Explanation Answer: B) Convex, 0.5 m

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Q:

Which of the following is not a renewable source of energy?

A) Solar B) Wind
C) Ocean waves D) Coal
 
Answer & Explanation Answer: D) Coal

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Q:

What of the given below devices converts chemical energy to electrical energy?

A) Transformer B) Battery
C) Electric Generator D) Wheel
 
Answer & Explanation Answer: B) Battery

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Q:

Why does a sprinter keep running even after crossing the finishing line?

A) He wants to make sure that he crosses the line B) Inertia of rest takes some time to make him stop
C) Inertia of motion keeps him moving D) Friction between his shoes and the ground causes him to move beyond the line
 
Answer & Explanation Answer: C) Inertia of motion keeps him moving

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Q:

Calculate the current flowing through a resistor of 10 ohm when a potential difference of 140 v is applied across it.

A) 14 amp B) 140 amp
C) 1400 amp D) 1.4 amp
 
Answer & Explanation Answer: A) 14 amp

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