A railing consists of thin vertical rods a distance of 2.0 cm apart

PHYSICS · Subjective · CBSE · Physics · Sound · Sound

Problem

A railing consists of thin vertical rods a distance of 2.0 cm apart. A boy runs past the railing at a speed of

3\,\text{m s}^{-1}

dragging a stick against the rods. What is the frequency of sound produced?