If the unit of force and length be each increased by four times, then the unit of energy is increased by-
18 times
16 times
4 times
2 times

Question

If the unit of force and length be each increased by four times- then the unit of energy is increased by-18 times16 times4 times2 times

Toppr Admin · Accepted Answer

Energy is equivalent to work doneW-F-lafter F1-4F-l1-4lW1-4F-4l-16-F-lW1-16Wso work done or unit of energy becomes 16 times-Hence -B- option is correct answer-

If the unit of force and length be each increased by four times, then the unit of energy is increased by-18 times16 times4 times2 times

Energy is equivalent to work doneW=F.lafter F1=4F,l1=4lW1=4F.4l=16.F.lW1=16Wso work done or unit of energy becomes 16 times.Hence (B) option is correct answer.

If the unit of force and length be each increased by four times, then the unit of energy is increased by-
18 times
16 times
4 times
2 times

Energy is equivalent to work done
$W = F . l$
after $F^{1} = 4 F, l^{1} = 4 l$
$W^{1} = 4 F .4 l$
$= 16. F . l$
$W^{1} = 16 W$
so work done or unit of energy becomes 16 times.
Hence (B) option is correct answer.