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Name the high-frequency radiation produced in nuclear reactions and also emitted by radioactive nuclei that are used in medicine to destroy cancer cells.

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  1. Gamma rays

  2. Ultraviolet waves

  3. Light waves

  4. X-rays

Correct Answer: Option 1 (Solution Below)

This question was previously asked in

SSC CPO Previous Paper 37 (Held On: 24 November 2020 Shift 2)


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The correct answer is Gamma rays.

  • For that reason, gamma rays (such as from cobalt-60) are often used in medical applications to treat cancer and sterilize medical instruments.

  • Ultraviolet (UV) light has shorter wavelengths than visible light.
    • The wavelength range is from 100-400 nm.
    • These invisible rays that are part of the energy that comes from the sun, that can burn the skin and cause skin cancer.
    • It is widely used in industrial processes and in medical and dental practices for a variety of purposes, such as killing bacteria, creating fluorescent effects, curing inks and resins, phototherapy, and suntanning.
  • Light radiates from a source in waves.
    • Each wave has two parts: an electric part, and a magnetic part. That's why light is called Electromagnetic Radiation.
    • Visible light is usually having wavelengths in the range of 400–700 nm (4.00 × 10⁻⁷ to 7.00 × 10⁻⁷ m), between the infrared and the ultraviolet.
  • X-rays have much higher energy and much shorter wavelengths than ultraviolet light.
    • X-rays have very small wavelengths, between 0.01 to 10 nanometers.
    • The use of x-rays is checking for fractures (broken bones), chest x-rays can spot pneumonia. Mammograms use x-rays to look for breast cancer.

  • Radio waves, television waves, and microwaves are all types of electromagnetic waves.

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