Which type of Rays are used to read the Old Written material which cannot be read easily :

Options :
  1. X-Rays
  2. Gamma Rays
  3. Beta Rays
  4. Alpha Rays
Answer and Explanation :-

Answer: Option 1

Explanation:

X-Rays are electomagnetic waves and shows Photo-electric effect and produce illumination on falling on fulorescent substances

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