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Electromagnetic spectrum

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Question 14

Ultraviolet light has wavelengths in the range 1.5 × 10-7 m to 4.0 × 10-7 m.

What is the range of the frequencies of this ultraviolet light?

(Take the speed of electromagnetic waves in a vacuum as 3.0 × 108 m s-1)

A

7.5×1011 Hz7.5 \times 10^{11}\text{ Hz}7.5×1011 Hz to 2.0×1012 Hz2.0 \times 10^{12}\text{ Hz}2.0×1012 Hz

B

7.5×1014 Hz7.5 \times 10^{14}\text{ Hz}7.5×1014 Hz to 2.0×1015 Hz2.0 \times 10^{15}\text{ Hz}2.0×1015 Hz

C

1.3×1015 Hz1.3 \times 10^{15}\text{ Hz}1.3×1015 Hz to 3.5×1015 Hz3.5 \times 10^{15}\text{ Hz}3.5×1015 Hz

D

4.5×1015 Hz4.5 \times 10^{15}\text{ Hz}4.5×1015 Hz to 1.2×1016 Hz1.2 \times 10^{16}\text{ Hz}1.2×1016 Hz

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Electromagnetic spectrum Questions

  1. IGCSE
  2. /Physics
  3. /Electromagnetic spectrum

198 exam-style questions on CIE IGCSE Physics Electromagnetic spectrum, covering Electromagnetic spectrum. Each one has a worked solution and a mark scheme showing where the marks go.

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