JEE Mains · Physics · STD 11 - Waves and sound
- JEE Mains 2026
- Easy
- MCQ
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
Pick an option to check your answer.
Answer & Solution
Correct Answer
(D) decrease by 4 times
Step-by-step Solution
Detailed explanation
\(V\rightarrow8V\Rightarrow R\rightarrow2R\)
\(\Rightarrow A\rightarrow4A\)
\(\Rightarrow I\rightarrow\frac{I_{0}}{4}\)
\(\Rightarrow A\rightarrow4A\)
\(\Rightarrow I\rightarrow\frac{I_{0}}{4}\)
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