Verified answer

Answer:

B.

Explanation:

Ultraviolet (UV) radiation is a type of non-ionizing radiation that is transmitted by the sun and fake sources, like tanning beds. While it has a few advantages for individuals, including the making of Nutrient D, it additionally can cause wellbeing chances. Helpful impacts of UV radiation incorporate the development of nutrient D, a nutrient crucial for human wellbeing. Nutrient D assists the body with retaining calcium and phosphorus from food and helps bone turn of events. The World Wellbeing Association prescribes 5 to 15 minutes of sun openness 2 to 3 times each week.

Openness to UV beams can cause untimely maturing of the skin and indications of sun harm like kinks, weathered skin, liver spots, actinic keratosis, and sun powered elastosis. UV beams can likewise cause eye issues. They can cause the cornea (on the facade of the eye) to become aggravated or consumed. UV radiation is broadly utilized in modern cycles and in clinical and dental practices for an assortment of purposes, like dispensing with microorganisms, making fluorescent impacts, restoring inks and saps, phototherapy and suntanning. Distinctive UV frequencies and powers are utilized for various purposes.

what is uv radiation :

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MY ANSWER :

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All of the following are uses/applications of UV rays except

• a. tanning of the skin
• b.sterilizing water from fountains
• c. identifying fake bank notes
• d. detecting temperature variations in human