1.

The speed of a wave in medium is 760 ms^(-1). If 3600 waves cross a point in the medium in 2 minutes, then the wavelength of the wave is :

Answer»

13.8m
41.5m
25.3m
57.2m

Solution :NUMBER of WAVES crossing a point PER second.
`n=(3600)/(2xx60)=30`
`lamda=(v)/(n)=(760)/(30)=25.3m`


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