Multiple choice

Which is the region of electromagnetic spectrum that can be detected by human eye?

  1. X-ray

  2. Ultraviolet rays

  3. Gamma rays

  4. Visible light
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D Correct answer
Explanation

The visible light spectrum (approximately 400-700 nm wavelength) is the only region of the electromagnetic spectrum that the human eye can detect. Our eyes have photoreceptor cells (rods and cones) that are sensitive to this specific range. X-rays, UV rays, and gamma rays are all invisible to humans and require specialized detectors for observation.

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