1)How can u protect eyes
2)Define laws of reflection.
Q3)Differentiate between parallel and diffused reflections)
4) What is constellation? Write name of two functionsl: 5)Draw structure of eye as write it's functions.
Answers
1.1. Wear Sunglasses with Complete Ultraviolet Protection. ...
2. Use Goggles at the Pool. ...
3. Wash Hands and Avoid Rubbing Your Eyes. ...
Wear Hats. ...
4. Protect Against Chemicals. ...
5. Keep Children Safe and Start Young with Eye Protection. ...
6. Wear eye protection during outdoor activities. ...
7. Eat Healthy and Drink Plenty of Water.
2. The law of reflection states that when a ray of light reflects off a surface, the angle of incidence is equal to the angle of reflection.
3. Regular reflection occurs at the surface of a plane surface like a plane mirror. Reflected rays after regular reflection are parallel. Diffused reflection occurs at the surface of a rough surface like cardboard. Reflected rays after regular reflection are not parallel.
4. The stars forming a group that has a recognisable shape is called a constellation. It is usually visible with naked eyes. Some examples of constellations are Ursa Major, Orion and Cassiopeia.
5. Light enters the eye through the cornea, the clear, curved layer in front of the iris and pupil. The cornea serves as a protective covering for the front of the eye and also helps focus light on the retina at the back of the eye.
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