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WBCS Preliminary Examination 2022 — General Studies · Question 149 of 200

Q149
General SciencePhysics
The radiation carrying maximum energy-
  1. a.UV rays
  2. b.Gamma rays
  3. c.X-rays
  4. d.IR rays

Answer: (B) Gamma rays

Gamma rays carry the highest energy among electromagnetic radiations, with the shortest wavelengths (less than 0.01 nm). Since energy is inversely proportional to wavelength ($E = hf = hc/\lambda$), shorter wavelength means higher energy. Gamma rays are produced by nuclear decay and can penetrate most materials.