Doppler effect is related to sound. It describes the change in frequency of sound waves due to relative motion between the source and observer. Approaching objects increase the frequency (higher pitch), while receding objects decrease it (lower pitch), affecting how ...
Category: Class 10 Science
NCERT Solutions for Class 10 Science and important questions for CBSE class 10 for session 2020-2021
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The fluctuations in the frequency of a sound source are called the Doppler effect. This phenomenon occurs when there is relative motion between the sound source and the observer, causing the observed frequency to increase as they approach each other ...
When we hear people talking in the same room without seeing them, it is due to diffraction. Sound waves bend around obstacles and spread out after passing through openings, allowing us to hear voices even when the source is not ...
Silent zones where ships do not hear lighthouse sirens are created due to interference. When sound waves from the siren meet at points where they are out of phase, destructive interference occurs, canceling the sound waves and resulting in areas ...
The maximum limit of sound intensity in decibels above which a person cannot hear is 95 dB. This threshold represents the level at which sound becomes too faint for the human ear to detect.