A) 16 : 1
B) 1 : 16
C) 1 : 1
D) 1 : 4
Correct Answer: C
Solution :
Power \[P\propto A{{T}^{4}}\propto {{r}^{2}}{{T}^{4}}\] Þ \[\frac{{{P}_{2}}}{{{P}_{1}}}={{\left( \frac{{{r}_{2}}}{{{r}_{1}}} \right)}^{2}}\times {{\left( \frac{{{T}_{2}}}{{{T}_{1}}} \right)}^{4}}\]\[={{\left( \frac{4r}{r} \right)}^{2}}\times {{\left( \frac{T/2}{T} \right)}^{4}}\]=1.
You need to login to perform this action.
You will be redirected in
3 sec
