Problem

Problem

The wavelength of two sound waves are 49 cm and 50 cm, respectively. If the room temperature is 30∘C30^\circ\text{C} , then the number of beats produced by them is approximately (velocity of sound in air at 30∘C30^\circ\text{C} = 332 m/s) a. 6 b. 10 c. 13 d. 18

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