Question
Download Solution PDF'Beats' is a phenomenon that occurs when frequencies of two harmonic waves are
This question was previously asked in
NDA (Held On: 18 Apr 2021) General Ability Test Previous Year paper
Answer (Detailed Solution Below)
Option 4 : nearly same
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NDA 01/2025: English Subject Test
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Detailed Solution
Download Solution PDFCONCEPT:
Beats:
- When two sound waves of nearly same frequencies, travelling in a medium, superimpose on each other, the intensity of the resultant sound at a particular position rises and falls regularly with time.
- This phenomenon of regular variation in the intensity of sound with time at a particular position is called beats.
- Beat frequency: The number of beats produced per second is called a beat frequency.
EXPLANATION:
- From above it is clear that, the phenomenon of wavering of sound intensity when two waves of nearly the same frequencies and amplitudes travelling in the medium, are superimposed on each other is called beats. Therefore option 4 is correct.
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