Q114 / 180 · NEET 2016 (Phase 1) · Physics

An air column, closed at one end and open at the other, resonates with a tuning fork when the smallest length of the column is $50 cm$ . The next larger length of the column resonating with the same tuning fork is:

A
$66.7 cm$
B
$100 cm$
Correct answer
C
$150 cm$
D
$200 cm$

Solution

First minimum resonating length for closed organ pipe

= \frac{λ}{4} = 50 cm

∴

Next larger length of air column

= \frac{3 λ}{4} = 150 cm

Hence, the correct answer is option: 'C'.

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