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Q. Which of the following are the highest-frequency electro magnetic waves?
Answer: Gamma Rays
Notes: Gamma rays are the highest energy electromagnetic radiation and typically have energies greater than 100 keV, frequencies greater than 1019 Hz, and wavelengths less than 10 picometers. They are typically produced from the decay of atomic nuclei. The most powerful sources of gamma-rays are caused by astronomical events.

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📌 Question Number: 55 in Physics GK 15 - Mechanical & Electromagnetic Waves in the above course in App.