Question

Two tuning forks A and B of frequencies 256 Hz and 192 Hz respectively are vibrated in air. If the wavelength of A is 1.25 m, calculate the wavelength produced by B.

Answer 1

Frequency of tuning fork A = f_A = 256 Hz

Frequency of tuning fork B = f_B = 192 Hz

Wavelength produced in A = λ_A = 1.25 m

Wavelength produced in B = λ_B = ?

Case - I

v = λ_Af_A 

v = 1.25 × 256

v = 320 ms^-1 

Case - II

v = λ_Bf_B 

λ_B = `"v"/"f"_"B"`

λ_B = `320/192 = 1.67` m