Advertisements
Advertisements
प्रश्न
What is meant by 'reflection of sound' ? What type of surfaces are the best for reflecting sound ?
Advertisements
उत्तर
The bouncing back of sound when it strikes a hard surface is called reflection of sound. The reflecting surface should be hard and large for sound to reflect from it.
APPEARS IN
संबंधित प्रश्न
What is the other name of a loud-hailer ?
Name the device which is used to address a small gathering of people.
Fill in the blank with suitable word :
An echo is simply a ................... sound.
Fill in the blank with suitable word :
Echoes are caused by the ...................... of sound.
On which day, a hot day or a cold day, an echo is heard sooner ? Give reason for your answer.
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a furnished room
How can you calculate the speed of sound using echo?
To hear an echo, the minimum distance of the obstacle from the source of sound must be ______.
Assertion: The sound which we hear again is called Echo.
Reason: The sensation of sound (Echo) persists in our brain for about 1 s.
Answer the following question in your own words.
What factors are important to get a distinct echo?
