Multiple choice

Which of the following are the most penetrating?

  1. Alpha rays

  2. Beta rays

  3. Gama rays

  4. X-rays
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gamma rays have the highest penetrating power among all electromagnetic radiations due to their high energy and lack of charge, allowing them to pass through most materials. Alpha particles are least penetrating (stopped by paper), beta particles have moderate penetration (stopped by aluminum), and X-rays though penetrating are less so than gamma rays.

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