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Ryan while verifying the laws of reflection of sound measured the anglebetween the incident sound wave & reflected sound wave to be 1300.What is the angle of incidence? Draw the diagram showing inci dentsound wave, reflected sound wave and the angle of incidence. |
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Answer» Since the normal makes an angle of 90 with the plain.Therefore,Let angle between incident ray and plain be X.=> angle of incidence=(90-X)=> angle of refraction=(90-X)According to question:90-x+ 90-x=130=>180-2x=130=>2x=50=x=25. |
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