Question:medium

The given diagram exhibits the relationship between the wavelength of the electromagnetic waves and the energy of photons associated with them. The three points P, Q, and R marked on the diagram may correspond respectively to:
relationship between the wavelength of the  electromagnetic waves

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Remember that shorter wavelengths correspond to higher energy photons. X-rays have the shortest wavelength and highest energy, followed by UV radiation and microwaves.
Updated On: Feb 18, 2026
  • X-rays, microwaves, UV radiation
  • X-rays, UV radiation, microwaves
  • UV radiation, microwaves, X-rays
  • Microwaves, UV radiation, X-rays
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The Correct Option is B

Solution and Explanation

The correct assignment of P, Q, and R to electromagnetic waves requires an understanding of the relationship between wavelength, energy, and their position within the electromagnetic spectrum.

  • X-rays exhibit short wavelengths and high photon energy.
  • UV (Ultraviolet) radiation possesses medium wavelengths and energy levels.
  • Microwaves are characterized by long wavelengths and low photon energy.

Within the electromagnetic spectrum, energy and wavelength are inversely proportional: increased energy corresponds to decreased wavelength, and vice versa. Based on this:

  1. P: aligns with X-rays due to their known short wavelengths and high energy.
  2. Q: aligns with UV radiation, which occupies an intermediate range for both wavelength and energy.
  3. R: aligns with microwaves, distinguished by their long wavelengths and low photon energy.

Consequently, the accurate sequence is: X-rays, UV radiation, microwaves.

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