Edexcel IGCSE Physics 3.12 Uses of Em Radiation Questions

Microwaves cook food and carry satellite signals; infrared heats objects, while ultraviolet makes fluorescent coatings emit visible light. X-rays reveal internal structures, and gamma rays sterilise food and medical equipment.

Exam points

Match EM waves to uses such as microwaves for cooking or gamma rays for sterilising.
Explain why fluorescent coatings turn ultraviolet radiation into visible light for lamps.
Choose suitable radiation for a stated use, giving the relevant property or context.

[Maximum number: 2]

This question is about waves.

(a)

Which of these is a use for x-rays?

checking for broken bones

cooking food

detecting forged banknotes

smoke detectors

[ 1 ]

(b)

Which of these is a use for infrared waves?

checking for broken bones

cooking food

detecting forged banknotes

sterilising medical instruments

[ 1 ]

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Edexcel IGCSE Physics 3.12 Uses of Em Radiation Questions question 1

Question (a)

Question (b)