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NDA 2023 GAT · General Knowledge · Nuclear and Modern Physics · easy

The surgical and imaging use of high-energy radiation is possible because gamma rays, among alpha, beta and gamma radiations, have the

Single correct option

The surgical and imaging use of high-energy radiation is possible because gamma rays, among alpha, beta and gamma radiations, have the
  1. A. Greatest ionising power
  2. B. Largest mass
  3. C. Greatest penetrating power
  4. D. Highest charge
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Answer: (C) Greatest penetrating power

Gamma rays are uncharged photons and pass through several centimetres of lead. Alpha particles have the highest ionising power but are stopped by paper, and beta particles are stopped by thin aluminium. So gamma rays have the greatest penetrating power.
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Original question written in the NDA 2023 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake