Advertisements
Advertisements
प्रश्न
Fill in the blank with suitable word :
An echo is simply a ................... sound.
Advertisements
उत्तर
An echo is simply a reflected sound.
APPEARS IN
संबंधित प्रश्न
When a sound is reflected from a distant object, an echo is produced. Let the distance between the reflecting surface and the source of sound production remains the same. Do you hear echo sound on a hotter day?
What is the other name of a loud-hailer ?
Name the device which is used to address a small gathering of people.
The echo of a sound is heard after 5 seconds. If the speed of sound in air be 342 m/s, calculate the distance of the reflecting surface.
A man is kidnapped, blindfolded and imprisoned in a big room. How could the man tell if he was in : a bare room
Explain by giving a scientific reason.
We cannot hear the echo produced in a classroom.
What is an echo?
How can you calculate the speed of sound using echo?
______ is an image obtained by the use of reflected ultrasonic waves.
Rohan conducted experiments on echo in different media. He observed that a minimum distance of 'x' meters is required for the echo to be heard in oxygen and 'y' meters in benzene. Compare 'x' and 'y'. Justify your answer.
Speed of sound in oxygen: 340 ms-1
Speed of sound in benzene: 200 ms-1
