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5.2 The electromagnetic spectrum

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Question 5

Four different electromagnetic radiations, $P$ , $Q$ , $R$ , and $S$ , are detected from a cosmic source:

Radiation $P\,$ consists of photons with energy 1.2 × 10^-15 J.
Radiation $Q\,$ has a frequency of 4.5 × 10¹¹ Hz.
Radiation $R\,$ consists of photons with energy $eV2.5\text{ eV}$ .
Radiation $S\,$ has a wavelength of 1.8 × 10^-8 m.

Which of these radiations has the longest wavelength in a vacuum?

Radiation $P$

Radiation $Q$

Radiation $R$

Radiation $S$

Markscheme

5.2 The electromagnetic spectrum Questions

GCSE
Physics
5.2 The electromagnetic spectrum

26 exam-style questions on Edexcel GCSE Physics 5.2 The electromagnetic spectrum. Each one has a worked solution and a mark scheme showing where the marks go.

5.2 The electromagnetic spectrum

Question bank

5.2 The electromagnetic spectrum

Easy Medium Hard

1 2 3 4 5 6 7 8

Question 5

Four different electromagnetic radiations, $P$ , $Q$ , $R$ , and $S$ , are detected from a cosmic source:

Radiation $P\,$ consists of photons with energy 1.2 × 10^-15 J.
Radiation $Q\,$ has a frequency of 4.5 × 10¹¹ Hz.
Radiation $R\,$ consists of photons with energy $eV2.5\text{ eV}$ .
Radiation $S\,$ has a wavelength of 1.8 × 10^-8 m.

Which of these radiations has the longest wavelength in a vacuum?

Radiation $P$

Radiation $Q$

Radiation $R$

Radiation $S$

Markscheme

5.2 The electromagnetic spectrum Questions

GCSE
Physics
5.2 The electromagnetic spectrum

26 exam-style questions on Edexcel GCSE Physics 5.2 The electromagnetic spectrum. Each one has a worked solution and a mark scheme showing where the marks go.