A) \[-\frac{n}{2}\]
B) \[-n\]
C) \[\frac{n}{2}\]
D) \[n\]
Correct Answer: A
Solution :
\[T=\frac{2\pi }{\omega }\] \[\Rightarrow \] \[\xi =\frac{4BA\omega }{2\pi }=\frac{2BA\omega }{\pi }\] \[I=\frac{P}{4\pi {{r}^{2}}}=\frac{60}{4\pi \times {{4}^{2}}}W/{{m}^{2}}\] \[{{P}_{1}}=I\times \frac{\pi {{d}^{2}}}{4}\] \[{{P}_{1}}=\frac{60}{4\pi \times {{4}^{2}}}\times \frac{\pi \times {{(2\times {{10}^{-3}})}^{2}}}{4}\] \[=9.375\times {{10}^{-7}}\,J/s\]You need to login to perform this action.
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