A man does a given amount of work in 10 sec. Another man does the… - Vidyadip

MCQ

A man does a given amount of work in $ 10 sec.$ Another man does the same amount of work in $20 sec.$ The ratio of the output power of first man to the second man is

A
$1$
B
$0.5$
✓
$2$
D
None of these

✓

Answer

Correct option: C.

$2$

c
(c)${\rm{Power}} = \frac{W}{t}.$ If W is constant then $P \propto \frac{1}{t}$
i.e. $\frac{{{P_1}}}{{{P_2}}} = \frac{{{t_2}}}{{{t_1}}} = \frac{{20}}{{10}} = \frac{2}{1}$

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