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Question
If the unit of length and force be increased four times, then the unit of energy is
Options:
A .  Increased 4 times   
B .  Increased 8 times
C .  Increased 16 times
D .  Decreased 16 times
Answer: Option C
:
C
Energy = force × distance, so if both are increased by 4 times then energy will increase by 16 times.

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