A tuning fork A produces four beats with another tuning fork B. If the frequency of tuning fork B is 320 Hz, then the frequency of tuning fork A is:
Correct answer: C. 320+4
- A. 320 * 4
- B. 320 / 4
- C. 320+4
- D. 320
Explanation
On loading the first one, the number of beats increases. Therefore, the frequency of the tuning fork must be 324 Hz. As it will decrease further on loading as the number of beats increases.
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About Superposition and Interference
Superposition states that overlapping waves produce a resultant displacement equal to the algebraic sum of their individual displacements. Interference covers constructive and destructive interference, phase difference, path difference, coherent sources, and conditions for maxima and minima. It differs from diffraction, which involves spreading around openings or obstacles.
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