a) λ
b) λ/2
c) 2 λ
d) 4 λ
Answer:
The correct answer is c) 2 λ
Explanation:
According to the question, the wavelength of sound waves in the first medium,
…….(i)
u represents velocity and v represents the frequency.
The wavelength of sound waves in the second medium,
……..(ii)
With the change in medium, the wave’s frequency remains constant.
………(iii)
Divide (ii) by (i), we get
or