Question

Mirrors have been
used since ages. It is said that Archimedes used huge mirrors to focus the heat of the sun's rays on enemy ships to burn them. The same principle is used in solar cookers where mirrors are used to reflect and focus the sun’s rays on to cooking containers. Astronomers use huge concave mirrors to focus starlight. The mirrors used in telescopes are polished by giving a thin coat of silver or aluminum to the glass.
Fresh snow is the best reflector of the sunlight in nature. As a highly reflective of sunlight in nature. As a highly reflective substance, snow dramatically increases UV-B exposure near the Earth’s surface as it reflects most of the radiation back into the atmosphere where it is then scattered back towards the surface by aerosols and molecules. Fresh snow can reflect much as 9.4 percent of the incoming UV radiation. The bright light reflected by it can dazzle and harm your eyes. Mountaineers therefore, use dark glasses.
1. Archimedes used mirrors to focus the heat of the sun’s rays to -------
2. Mirrors used in telescopes are polished by giving the glass a thin coat of ----------
3. The principle of focusing the sun’s rays is used in----------
4. The bright light reflected by fresh snow can--------
5. The earth reflects -------- the radiation received from the sun.

Answer 1

Explanation:

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