Electromagnetic waves

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Question 20
Medium

Gamma radiation is a type of electromagnetic wave.

a.

Give one common use of gamma rays.

[1]
b.

A particular gamma ray has a wavelength of 0.0040.0040.004 nanometres. Which of the following values is equal to 0.0040.0040.004 nanometres?

  • 4×10−11 m4 \times 10^{-11}\text{ m}4×10−11 m
  • 4×10−12 m4 \times 10^{-12}\text{ m}4×10−12 m
  • 4×10−13 m4 \times 10^{-13}\text{ m}4×10−13 m
  • 4×10−10 m4 \times 10^{-10}\text{ m}4×10−10 m
[1]
c.

The speed of electromagnetic waves in a vacuum is 3.0×108 m/s3.0 \times 10^8\text{ m/s}3.0×108 m/s. Calculate the frequency of this gamma-ray wave. Use your wavelength conversion from Part 2.

[3]

Electromagnetic waves Questions

  1. GCSE
  2. /Physics
  3. /Electromagnetic waves