2023 · Specimen · 0625/03 | Q9

0/38parts marked · 0 of 75 marks

Question (9 of 12)7 marks · Practise this topic →

Options

Available practice: 75 of 80 marks. Parts 8(b), 10(d) await marking support. Scores cover available parts only.

Fig. 9.1 shows some parts of the electromagnetic spectrum.

(a)(i)In Fig. 9.1, one part of the electromagnetic spectrum is not labelled. State the name of this part.

Answer guidance

State A short answer. No explanation is needed, and adding one cannot earn extra marks.

[1 mark]

The speed of visible light waves in a vacuum is 3.0 × 10⁸ m/s.

(a)(ii)State the value for the speed of infrared waves in a vacuum.

Answer guidance

State A short answer. No explanation is needed, and adding one cannot earn extra marks.

[1 mark]

Some parts of the electromagnetic spectrum have a wavelength shorter than that of visible light.

(a)(iii)State one example.

Answer guidance

State A short answer. No explanation is needed, and adding one cannot earn extra marks.

[1 mark]

X-rays and γ-rays are used in hospitals.

(b)(i)Describe one medical use for X-rays and one medical use for γ-rays.

Answer guidance

Describe Say what happens, in order. Reasons are not required unless the question also asks why.

[2 marks]

(b)(ii)State two reasons why γ-rays are dangerous to living things.

Answer guidance

State A short answer. No explanation is needed, and adding one cannot earn extra marks.

[2 marks]

0625/03/SP/23Cambridge IGCSE Physics 0625 · Specimen 2023 · Paper 3 · Question 9