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EF17xx

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## Homework Statement

The question is as follows:

The distance between the two positions of maximum loudness is x

What is the wavelength of the sound emitted by the tuning fork ?

A. x/2

B. x

C. 3x/2

D. 2x

the correct answer is answer D.

## Homework Equations

Pipe with two ends open

λn= 2L /n

Pipe with one end open and one end closed

λn= 4L/n

## The Attempt at a Solution

At the positions of maximum loudness, there must be an antinode, but the water acts like a closed pipe so there should be a node at the surface of the water. If there is an antinode at the positions of maximum loudness the fundamental frequency would have a wavelength in distance x of λ/2. but that doesn't make sense since there should be a node so now I am confused and also don't understand how to know how many loops there should be.