Compare the following(i) Wavelengths of the incident solar radiation a

1.	Compare the following(i) Wavelengths of the incident solar radiation absorbed by the earth’s surface and the radiation re-radiated by the earth.(ii) Tanning effect produced on the skin by UV radiation incident directly on the skin and that coming through glass window.
Answer» (i) Radiation re-radiated by earth has greater wavelength. (ii)Tanning effect is significant for direct UV radiation; it is negligible for radiation coming through the glass.

Compare the following(i) Wavelengths of the incident solar radiation absorbed by the earth’s surface and the radiation re-radiated by the earth.(ii) Tanning effect produced on the skin by UV radiation incident directly on the skin and that coming through glass window.

Answer»

(i) Radiation re-radiated by earth has greater wavelength.

(ii)Tanning effect is significant for direct UV radiation; it is negligible for radiation coming through the glass.

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Compare the following(i) Wavelengths of the incident solar radiation absorbed by the earth’s surface and the radiation re-radiated by the earth.(ii) Tanning effect produced on the skin by UV radiation incident directly on the skin and that coming through glass window.

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