MCQ
A student determines the velocity of sound with the help of a closed organ pipe. If the observed length for fundamental frequency is $24.7 m$, the length for third harmonic will be .... $cm$
- ✓$74.1 $
- B$72.7$
- C$75.4$
- D$73.1 $
✓
Answer
Correct option: A.
$74.1 $
a
(a) ${l_2} = 3{l_1} = 3 \times 24.7 = 74.1\,cm$
(a) ${l_2} = 3{l_1} = 3 \times 24.7 = 74.1\,cm$
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