If the unit of length and force be increased

Asked by admin @ 17/08/2021 in Physics viewed by 375 People

If the unit of length and force be increased four times, then the unit of energy isA. increased 4 times.B. increased 8 times.C. increased 16 times.D. decreased 16 times.

Answered by admin @ 17/08/2021

Final Answer : C : Increased 16 times

I am Thinking that you are remaining in same system of unit (since you didn't mentioned new units) .

Steps:
1) We know,
Dim(E) = dim(F) * dim (L)
E(i) = F* L

Since, we are increasing F to 4 F and L to 4L.
So,
Energy will increase as 4 * 4 FL :16FL
Hence, Energy increases 16 times to that of initial.

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