Physics 9702 · AS & A Level · Electromagnetic spectrum

Electromagnetic spectrum — practice question

What are the names of the electromagnetic waves whose wavelengths in a vacuum are $100\,\text{pm}$ and $100\,\mu\text{m}$?

  • A$100\,\text{pm}$: $\gamma$-rays, $100\,\mu\text{m}$: infrared
  • B$100\,\text{pm}$: $\gamma$-rays, $100\,\mu\text{m}$: red light
  • C$100\,\text{pm}$: X-rays, $100\,\mu\text{m}$: infrared
  • D$100\,\text{pm}$: X-rays, $100\,\mu\text{m}$: red light

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