Q. Explain why a ray of light passing through the centre of curvature of concave minor gets reflected along the same path.
Ans.
The light falling on the centre of curvature is reflected back along the same path because the incident ray falls on the mirror along the normal to the reflecting surface.
Q. What is the important function of presence of ozone in earth’s atmosphere?
Ans.
Ozone is the Earth’s natural process for all life forms. It shields our planet from the UV radiations, as these ultraviolet rays are harmful for all the living things. Therefore, any change in the size of this layer will automatically affect the life of people, plants and animals living on earth.
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