Question
Download Solution PDFTwo sound waves of slightly different frequencies propagating in the same direction produce beats due to
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
- Interference: When two waves superpose to form a resultant wave.
- Diffraction: It is defined as bending of waves around the corner when a wave encounters an obstacle.
- Refraction: It occurs with light, radio waves, etc. When light passing obliquely from one medium to another medium bends.
- Polarization: It is a property of transverse waves. The direction of oscillations becomes perpendicular to the direction of motion.
EXPLANATION:
- Beats: When two sound waves of slightly different frequencies interfere, a repeating sound is heard known as beats.
- The above diagram shows the interference of two sound waves of slightly different frequencies and resulting beat from zero to high amplitude. In the diagram, C.I. means points of constructive interference and D.I. destructive interference.
- A loud voice is heard or a peak in the beat pattern in the diagram, when constructive interference occurs.
- When destructive interference occurs, no sound is heard as in the diagram no displacement on the beat pattern.
- So, The answer is option 3 i.e. Interference.
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