A medical carbon dioxide (CO2CO_2CO2) laser emits pulses of electromagnetic radiation. Each emitted photon carries an energy of 1.66 × 10-20 J.
The diagram below shows a logarithmic scale of wavelength λ \lambda\,λ in metres, with four positions labeled P\text{P}P, Q\text{Q}Q, R\text{R}R, and S\text{S}S.
Which labeled letter represents the correct region of the electromagnetic spectrum for this laser radiation?
P\text{P}P
Q\text{Q}Q
R\text{R}R
S\text{S}S
Electromagnetic waves Questions
Practise AQA GCSE Physics Electromagnetic waves with exam-style questions for Foundation and Higher tier. 52 questions covering Types of electromagnetic waves, Properties of electromagnetic waves 1, Properties of electromagnetic waves 2, Uses and applications of electromagnetic waves, Lenses (physics only), and Visible light (physics only), matched to the AQA GCSE Physics (8463) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.