MCQ
Two sound sources when sounded simultaneously produce four beats in $0.25$ second. the difference in their frequencies must be
- A$4$
- B$8$
- ✓$16$
- D$1$
✓
Answer
Correct option: C.
$16$
c
(c) No. of beats = frequency difference = $\frac{4}{{0.25}} = 16$
(c) No. of beats = frequency difference = $\frac{4}{{0.25}} = 16$
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