Question 1
FUltraviolet radiation from the Sun can be hazardous to the human body.
A scientist tests four fabrics, A, B, C and D, to see how much ultraviolet radiation passes through each one.
The Figure shows the results.
Figure
a.[1]
State one hazard of ultraviolet radiation to the human body.
b.[1]
Which fabric, A, B, C or D, would give the best protection from ultraviolet radiation?
c.[2]
The ultraviolet radiation reaching fabric D transfers 0.80 J of energy each second.
Calculate the energy transferred each second by the ultraviolet radiation that passes through fabric D.
d.[2]
Ultraviolet radiation is more hazardous to the body than visible light.
Explain why.
e.[1]
Suggest one variable the scientist must keep the same to make the test fair.
5.2 The electromagnetic spectrum Questions
48 exam-style questions on OCR GCSE Physics 5.2 The electromagnetic spectrum, covering 5.2.1 Electromagnetic waves in space, 5.2.2 Energy transfer by electromagnetic waves, 5.2.3 Frequency and wavelength across the spectrum, 5.2.4 Groups of the electromagnetic spectrum, 5.2.5 Visible light and the limits of human sight, 5.2.6 Light as an electromagnetic wave, 5.2.7 Uses of electromagnetic waves, 5.2.8 Hazards of ultraviolet, X-rays and gamma rays, 5.2.9 Ultrasound and imaging inside the body, and 5.2.10 Radio waves and oscillating circuits. Each one has a worked solution and a mark scheme showing where the marks go.