A tuning fork produces sound waves of wavelength $\lambda$ in air.This sound is used to cause resonance in an air column, closed at one end and open at the other.The length of this column CANNOT be:
A)"$\lambda$/4"
B)"2$\lambda$/4"
C)"3$\lambda$/4"
D)"5$\lambda$/4"
E)"7$\lambda$/4"

Question

Quizplus · Accepted Answer

For a closed-end air column, resonance occurs at odd multiples of $\lambda/4$. Therefore, lengths like $\lambda/4$, $3\lambda/4$, $5\lambda/4$, etc., are possible. $2\lambda/4$ is an even multiple and cannot cause resonance.

A Tuning Fork Produces Sound Waves of Wavelength λ\lambdaλ In AirThis Sound Is Used to Cause Resonance in an Air

A Tuning Fork Produces Sound Waves of Wavelength $\lambda$ In AirThis Sound Is Used to Cause Resonance in an Air