The diagram illustrates the electromagnetic spectrum. The numbers show the approximate wavelength at the edges between the different regions of the spectrum. For a device to be able to use electromagnetic radiation, it must have an aerial with a size approximately equal to the wavelength of the radiation it is intended to receive. Which statement is correct?
- AA mobile phone uses radiation from region P.
- BA television satellite dish uses radiation from region Q.
- CThe receptor cells in an eye use radiation from region R.
- DThe remote controller for a television uses radiation from region U.