Which list shows regions of the electromagnetic spectrum in order of decreasing wavelength?
X-ray→ultraviolet→infrared→microwave\text{X-ray} \rightarrow \text{ultraviolet} \rightarrow \text{infrared} \rightarrow \text{microwave}X-ray→ultraviolet→infrared→microwave
microwave→infrared→ultraviolet→X-ray\text{microwave} \rightarrow \text{infrared} \rightarrow \text{ultraviolet} \rightarrow \text{X-ray}microwave→infrared→ultraviolet→X-ray
microwave→ultraviolet→infrared→X-ray\text{microwave} \rightarrow \text{ultraviolet} \rightarrow \text{infrared} \rightarrow \text{X-ray}microwave→ultraviolet→infrared→X-ray
infrared→microwave→X-ray→ultraviolet\text{infrared} \rightarrow \text{microwave} \rightarrow \text{X-ray} \rightarrow \text{ultraviolet}infrared→microwave→X-ray→ultraviolet
198 exam-style questions on CIE IGCSE Physics Electromagnetic spectrum, covering Electromagnetic spectrum. Each one has a worked solution and a mark scheme showing where the marks go.