Answer:
Explanation:
We know that the distance between two consecutive crest and the trough is called wavelength of any wave.
(a) Gamma rays have shorter wavelength while radio wave have maximum wavelength. Wavelength of gamma rays is ranging from [tex]0.01\times 10^{-12}\ m\ to\ 10\times 10^{-12}\ m[/tex]
(b) Frequency of FM radio station radiation, [tex]f=93.1\ MHz=93.1\times 10^6\ Hz[/tex]
[tex]c=f\times \lambda[/tex]
[tex]\lambda=\dfrac{c}{f}[/tex]
[tex]\lambda=\dfrac{3\times 10^8}{93.1\times 10^6}[/tex]
[tex]\lambda=3.22\ m[/tex]
(c) Frequency of AM radio station , [tex]f=680\ kHz=680\times 10^3\ Hz[/tex]
[tex]c=f\times \lambda[/tex]
[tex]\lambda=\dfrac{c}{f}[/tex]
[tex]\lambda=\dfrac{3\times 10^8}{680\times 10^3}[/tex]
[tex]\lambda=441.17\ m[/tex]
(d) The wavelength of yellow is 597 nm.
(e) The wavelength of red light is 680 nm.
It is clear that, the decreasing order of wavelength is :
Frequency of AM radio station is 441.17 m
Frequency of FM radio station is 3.22 m
The wavelength of red light is 680 nm
The wavelength of yellow is 597 nm
The wavelength of Gamma rays is [tex]0.01\times 10^{-12}\ m\ to\ 10\times 10^{-12}\ m[/tex]
