Advertisements
Advertisements
Question
State the safe limit of sound level in terms of decibel for human hearing.
Advertisements
Solution
The safe limit of sound level for human hearing is 30 decibels (30 dB).
APPEARS IN
RELATED QUESTIONS
What is an echo
A person standing between two vertical cliffs and 480 m from the nearest cliff shouts. He hears the first echo after 3s and the second echo 2s later. Calculate:
1)The speed of sound.
2) The distance of the other cliff from the person
When sound propagates in air, it does not carry energy with it.
How does sound travel in air?
Define the following term:
Frequency
How does the wave pattern of a loud note differ from a soft note? Draw a diagram.
Explain the following and illustrate your answer by drawing appropriate diagram:
Frequency
Give a scientific reason.
The sounds generated by a tabla and a sitar are different.
What does the intensity of sound depend upon?
