The picture shows a xylophone. A, B, C and D are the rods in it. Which of the following rods has high pitch of the sound and which has low frequency of vibrations?

Options

A. `{:("High pitch","Low frequency"),(D,A):}`
B. `{:("High pitch","Low frequency"),("B and C","B and C"):}`
C. `{:("High pitch","Low frequency"),("A and D","A and D"):}`
D. `{:("High pitch","Low frequency"),(A,D):}`

Answer

D

Explanation

Pitch of sound depends on the frequency of vibrations. Smaller length vibrates faster, so the frequency will be more and sound produced is of high pitch