Physics (AS & A Level) · Feb / March 2018 · Paper 12 · Question 23

The table lists possible orders of magnitude of the wavelengths of some of the principal radiations of the electromagnetic spectrum. Which row shows the correct orders of magnitude of the wavelengths?

1. Amicrowaves 10⁻⁶, infra-red 10⁻¹⁰, ultraviolet 10⁻¹², X-rays 10⁻¹⁴
2. Bmicrowaves 10⁻⁴, infra-red 10⁻⁸, ultraviolet 10⁻¹⁰, X-rays 10⁻¹²
3. Cmicrowaves 10⁻², infra-red 10⁻⁶, ultraviolet 10⁻⁸, X-rays 10⁻¹⁰
4. Dmicrowaves 10², infra-red 10⁻⁴, ultraviolet 10⁻⁶, X-rays 10⁻⁸

As printed in the paper