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| 1. |
Wavelength of radiation incident on a surface is 850 nm. Will the surface become visible when exposed to this radiation ? Explain. |
| Answer» SOLUTION :As we know, the range of WAVELENGTH of visible radiation is from 400 nm to 700 nm. The radiation having wavelength greater greater than 700 nm is termed as infra - red radiations which only produces warmth , so the wavelength of radiation 850 nm cannot be visible. | |