To hear the echo distinctly,will the distance from the source of sound to the reflecting surface be same at all temperatures? Explain your answer.

The minimum distance between source of sound and reflection surface for the clear hearing of sound is

What is theminimumdistance of the reflecting surface to hear an echo ?

To hear an echo, the total distance covered by sound from the point of generation to the reflecting surface and back should be atleast ______

Maithili, Shaila and Ajay live in three different places in a city. There is a toy shop equidistant from their houses. Which geometrical construction should be used to represent this? Explain your answer.

Choose the correct option? The minimum distance between the source of sound and reflection surface for the clear of hearing of sound is A. 17.2 m B. 20 m C. 1.7 m D.19.2 m

A boy moves away from a steady source of sound at a constant speed the sound he hears will

A boy moves away from a steady source of sound at a constant speed. The sound he hears will

In given circuit diagram two resistors are connected to a 6V supply. A third resistor is now connected in a parallel with 6 Omega resistor will the potential difference across the 8 Omega resistor the larger, smaller or the same as before? Explain the reason for your answer.