An ideal organ pipe resonates at successive frequencies of `50 Hz , 150 Hz , 250 Hz` , etc. ( speed of sound ` = 340 m//s`) The pipe isA. Open at both ends and of length `3.4 m`B. Open at both ends and of length `6.8 m`C. Closed at one end , open at the other , and of length `1.7 m`D. Closed at one end , open at the other , and of length `3.4 m`

An ideal organ pipe resonates at successive frequencies of `50 Hz , 15

1.	An ideal organ pipe resonates at successive frequencies of `50 Hz , 150 Hz , 250 Hz` , etc. ( speed of sound ` = 340 m//s`) The pipe isA. Open at both ends and of length `3.4 m`B. Open at both ends and of length `6.8 m`C. Closed at one end , open at the other , and of length `1.7 m`D. Closed at one end , open at the other , and of length `3.4 m`
Answer» Correct Answer - C The frequencies given are odd multiple of fundamental . Hence close organ pipe `50 = (1)/( 4 l) xx 340 rArr l = 1.7 m`

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