Advertisements
Advertisements
Question
Why do we hear more clearly in a room with curtains than in a room without curtains ?
Solution
We hear more clearly in a room that is curtained than in a room that is uncurtained because curtains are bad reflectors of sound. They absorb most of the sound falling on them, and hence do not produce echoes. On the other hand, in an uncurtained room, there is a greater reflection of sound and thus echoes are formed. These echoes cause a hindrance to hearing. Therefore, we hear more clearly in a room with curtains than in a room without curtains.
APPEARS IN
RELATED QUESTIONS
A man is standing at a distance of 12 m from a cliff. Will he be able to hear a clear echo of his sound? Give a reason for your answer.
The minimum distance between the source and the reflector in air. So that an echo is heard is approximately equal to ______.
Which of the following statement best describes frequency?
Fill in the blank with suitable word :
An echo is simply a ................... sound.
In which medium, air or water, an echo is heard much sooner ? Why ?
State the laws of reflection of sound.
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a furnished room
Answer the following question in your own words.
What should be the dimensions and the shape of classrooms so that no echo can be produced there?
What is an echo?
What is an echo? Write the conditions to hear an echo.
