Which of the following waves are longitudinal waves?

l. Ripples on the surface of water

II. Waves produced by a tuning fork vibrating in air

III. Light waves

IV. Waves produced by a flute

A. I and II only
B. I and III only
C. II and III only
D. II and IV only
E. III and IV only

Correct Answer:

Option D – II and IV only