JEE Mains · Physics · STD 11 - 14. waves and sound
A point source is kept at the center of a spherically enclosed detector. If the volume of the detector increased by 8 times, the intensity will
- A increase by 8 times
- B increase by 64 times
- C decrease by 8 times
- D decrease by 4 times
Answer & Solution
Correct Answer
(D) decrease by 4 times
Step-by-step Solution
Detailed explanation
\(V\rightarrow8V\Rightarrow R\rightarrow2R\) \(\Rightarrow A\rightarrow4A\) \(\Rightarrow I\rightarrow\frac{I_{0}}{4}\)
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