A radio can tune in to any station in the 7.5 MHz to 12 MHz band. What is the corresponding wavelength band ?

Explanation

`c=v_(max)lambda_(min)rArr rArr lambda_(min)=(c )/(v_(max))`
`therefore lambda_(max)=(3xx10^(8))/(12xx10^(6))=25m`
`c=v_(min)lambda_(max)rArr lambda_(max)=(c )/(v_(min))`
`therefore lambda_(max)=(3xx10^(8))/(7.5xx10^(6))=40 m`
Required range of wavelength,
`= lambda_(min)` to `lambda_(max)=25m` to 40 m