Multiple choice

The wavelengths of X-rays is of the order of

  1. 1 cm

  2. 1 m

  3. 1 angstrom

  4. 10 micron
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

X-rays have wavelengths in the range of 0.1 to 10 nanometers, with 1 angstrom (0.1 nanometers) being a characteristic order of magnitude. This is much shorter than visible light (400-700 nm), allowing X-rays to penetrate materials. Options A, B, and D are orders of magnitude too large.

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