Multiple choice

Which of the following particles can be detected by a Rs. 500 note?

  1. Proton

  2. Neutron

  3. Alpha particle

  4. Gamma rays
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

It is an energetic photon or light wave in the same electromagnetic family as light and x-rays, but is much more energetic and harmful. It is capable of damaging living cells as it slows down by transferring its energy to surrounding cell components. The Rs - 500 note detects energetic gamma rays through the case walls. Gamma ray sources are used to find flaws in pipes and vessels and to check the integrity of welds in steel.

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