WavesAQA GCSE Physics (8463)

Electromagnetic Waves

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next. (2026)

Practice progress

5 MCQs

0 of 5 attempted

Correct

Incorrect

Remaining

1
All electromagnetic waves are:
Answer & explanation
Correct: option B
EM waves consist of electric and magnetic field oscillations perpendicular to the direction of travel — that makes them transverse.
2
What is the speed of all EM waves in a vacuum?
Answer & explanation
Correct: option C
All EM waves travel at $c = 3 \times 10^8$ m/s in a vacuum.
3
Which group of the EM spectrum has the longest wavelength?
Answer & explanation
Correct: option D
Radio waves have the longest wavelength (metres to kilometres) and the lowest frequency.
4
Which is correct about visible light?
Answer & explanation
Correct: option C
Visible light is a small slice of the EM spectrum with wavelengths roughly 400 nm (violet) to 700 nm (red).
5
Which of these is generated by changes in the nucleus of an atom?
Answer & explanation
Correct: option D
Gamma rays come from nuclear changes (radioactive decay). The other groups originate in electron or current processes outside the nucleus.

WavesAQA GCSE Physics (8463)

Work through the notes, try the practice questions, then take the quiz. The report tells you exactly what to revise next. (2026)

5 MCQs

0 of 5 attempted

Correct

Incorrect

Remaining

1
All electromagnetic waves are:
Answer & explanation
Correct: option B
EM waves consist of electric and magnetic field oscillations perpendicular to the direction of travel — that makes them transverse.
2
What is the speed of all EM waves in a vacuum?
Answer & explanation
Correct: option C
All EM waves travel at $c = 3 \times 10^8$ m/s in a vacuum.
3
Which group of the EM spectrum has the longest wavelength?
Answer & explanation
Correct: option D
Radio waves have the longest wavelength (metres to kilometres) and the lowest frequency.
4
Which is correct about visible light?
Answer & explanation
Correct: option C
Visible light is a small slice of the EM spectrum with wavelengths roughly 400 nm (violet) to 700 nm (red).
5
Which of these is generated by changes in the nucleus of an atom?
Answer & explanation
Correct: option D
Gamma rays come from nuclear changes (radioactive decay). The other groups originate in electron or current processes outside the nucleus.