The wavelength of a particle is 99 cm and that of other is 100 cm. Spe – McqOptions

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1.	The wavelength of a particle is 99 cm and that of other is 100 cm. Speed of sound is 396 m/s. The number of beats heard is [DCE 2001]
A.	4
B.	5
C.	1
D.	8
Answer» B. 5

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