A) \[1\]
B) \[1/2\]
C) \[2/1\]
D) None of these
Correct Answer: C
Solution :
The rate of doing work is defined as power \[Power=\frac{work\,\,done}{time}\] \[\therefore \] \[\frac{{{P}_{1}}}{{{P}_{2}}}=\frac{{{W}_{1}}/{{t}_{1}}}{{{W}_{2}}/{{t}_{2}}}\] Given, \[{{t}_{1}}=10s,\,\,{{t}_{2}}=20s,\,\,{{W}_{1}}={{W}_{2}}\] \[\therefore \] \[\frac{{{P}_{1}}}{{{P}_{2}}}=\frac{{{t}_{2}}}{{{t}_{1}}}=\frac{2}{1}\]
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