JEE Main & Advanced
Physics
Wave Mechanics
Question Bank
Numerical Value Type Questions - Waves
question_answer
A road runs between two parallel rows of buildings. A motorist moving just in the middle with a velocity of 30 km/ h, sounds the hom. He hears an echo one second after sounding the horn. Find the distance (in metre) between the two rows of the buildings. The velocity of sound\[=330\text{ }m/s.\]