Waves - Result Question 10
10. A point source emits sound equally in all directions in a non-absorbing medium. Two points and are at distances of and respectively from the source. The ratio of the intensities of the waves at and is[2005]
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 10. (c)
Solution:
- (c) Intensity
Energy/sec/unit area
Area