Question:
wave of wavelength 48 cm enters at S in the tube as shown in
Last updated: 6/10/2023
![wave of wavelength 48 cm enters at S in the tube as shown in](https://media.kunduz.com/media/sug-question-candidate/20210622071645774679-3392229.jpg?h=512)
wave of wavelength 48 cm enters at S in the tube as shown in the figure Then the smallest radius r of the semicircular part so that a minimum of sound is observed at Dis S 1 14 cm 3 21 cm r D 2 20 cm 4 15 cm H