Q31 / 117 · NTA Abhyas (JEE Main) 2020 · Physics · Waves and Sound
There are two waves having wavelength and and same velocity The beat frequency is
- A
- B
- Correct answerC
- D
Solution
If and are the frequencies of the two waves, then the beat frequency
Frequency of wave,
For wave,
So, beat frequency
Frequency of wave,
For wave,
So, beat frequency
Hence, the correct answer is option: 'C'.