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CAIE IGCSE Physics 3.3.1 Main Regions of the Em Spectrum in Questions

Practise placing electromagnetic regions in wavelength or frequency order and identify which lie immediately above, below or around visible light.

Syllabus
2026–2028
Course
Physics 0625

Exam points

  • Order electromagnetic-spectrum regions by increasing frequency as radio, microwave, infrared, visible, ultraviolet, X-ray and gamma; reverse for wavelength and identify unknown bands from values or neighbouring regions.

CAIE IGCSE Physics 3.3.1 Main Regions of the Em Spectrum in Questions question 1

[Maximum number: 1]

The table gives the wavelengths of three electromagnetic waves.

electromagnetic<br>wavewavelength /m/ \mathrm{m}
P3.2×10−33.2 \times 10^{-3}
Q5.0×10−95.0 \times 10^{-9}
R2.6×1032.6 \times 10^{3}

Which row correctly identifies P, Q and R ?

P

Q

R

microwave

radio wave

X-ray

microwave

X-ray

radio wave

radio wave

microwave

X-ray

radio wave

X-ray

microwave

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