"What kind of electromagnetic radiation can be detected by a human body? I) visible light II) infrared light III) ultra-violet light IV) all other light 1. I and IV only 2. II only 3. I and II only 4. All of these 5. II, III and IV only 6. III and IV only 7. I and III only 8. I, II and III only 9. III only 10. I only"

Only portions of the electromagnetic spectrum is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light which have wavelengths from about 390 to 750 nm that is; ultraviolet light and visible light.

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ConcepcionPetillo ConcepcionPetillo · Answer 2 · 2022-03-25T13:57:51+01:00

The correct option is option 3

I and II only

Electromagnetic radiations:

The electromagnetic spectrum of radiations varies from the frequency of 1 Hz to 10²⁵ Hz, and wavelength from 10⁻¹² m to 10⁴ m.

Our bodies can detect only a small range of this spectrum.

Visible light is detectable to us, the visible light is detected by our eyes, this is what enables us to see.

Visible light ranges from 400 nm to 700 nm in wavelength and 400 THz to 800 THz in frequency.

We can also, detect infrared spectrum, this is what enables us to experience heat, the infrared radiations are detected by the skin.

The infrared spectrum ranges from 700 nanometers (nm) to 1 millimeter (mm) in wavelength and 430 THz down to 300 GHz in frequency.

Learn more about electromagnetic spectrum:

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