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5.2 The electromagnetic spectrum

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Question 5

A lamp housing contains a reflective lining. A test measures how much of the visible-light and infrared energy is reflected by the lining.

RadiationEnergy reaching the liningPercentage of energy reflected
Visible light70 J80%
Infrared50 J40%

How much energy in total is reflected by the lining?

[1]
A

76 J76\ \mathrm{J}76 J

B

44 J44\ \mathrm{J}44 J

C

120 J120\ \mathrm{J}120 J

D

96 J96\ \mathrm{J}96 J

Markscheme

5.2 The electromagnetic spectrum Questions

  1. GCSE
  2. /Physics
  3. /5.2 The electromagnetic spectrum

84 exam-style questions on Edexcel GCSE Physics 5.2 The electromagnetic spectrum, covering 5.2.1 Electromagnetic waves and refraction in glass (core practical), 5.2.2 Groups of the electromagnetic spectrum, 5.2.3 Wavelength-dependent behaviour of EM waves, and 5.2.4 Velocities of EM waves in different substances. Each one has a worked solution and a mark scheme showing where the marks go.

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