Verified Solution • 2025–26 Session moderate

QPages 394-395: Q1: HC Verma: Concepts of Physics - Volume 2 X-Rays Pages 394-395: Q1 Solution: For harder X-rays,

⚠️ Common Exam Traps & Conceptual Pitfalls

Students often equate “harder” with “more intense” or “longer wavelength”; however, “harder” X‑rays mean higher photon energy, so their frequency ($\nu$) is larger and wavelength ($\lambda = c/\nu$) is shorter. Remember $E = h\nu$; intensity is independent of hardness.

For harder X-rays,

Multiple Choice Options

  • A the wavelength is higher
  • B the intensity is higher
  • C the frequency is higher
  • D the photon energy is higher.

Step-by-Step Verified Solution

**Answer:** (c), (d). **Step-by-Step Explanation:** Harder X-rays have higher frequency and higher photon energy.

All Questions in this Chapter

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