Which of the following has minimum wavelength? (a) X-rays (b) Ultraviolet rays (c) γ -rays (d) Cosmic rays

Answer: (d). Cosmic radiation has the highest energy, beyond gamma rays, so it is taken as having the smallest wavelength. Order: cosmic < gamma < X-rays < UV. So the answer is (d) Cosmic rays.

Which of the following has minimum wavelength? | NEET 2002 (AIPMT)

Q37NEET 2002 · AIPMTEasy

Electromagnetic Spectrum & Atmosphere

Which of the following has minimum wavelength?

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Answer: (d)

Cosmic radiation has the highest energy, beyond gamma rays, so it is taken as having the smallest wavelength.
Order: cosmic < gamma < X-rays < UV.
So the answer is (d) Cosmic rays.

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