Q2. Give reasons:-
1. Space beyond the earth’s atmosphere appears dark
2. We are able to read while sitting in the shade.
3. We should not observe the solar eclipse with naked eyes.
Q3. Give some example of scattering of light that we come across in day-to-day
life.
Answers
Answer:
Q 2
1. In the space, there is no atmosphere. Hence light doesnt get scattered at all while in space. There are no air particles against which the sun light can strike, get reflected or scattered. Hence we see everything black
2. Light, which is required for seeing and reading, will reach us even when we are sitting under the shade. This light comes to us upon reflecting on various objects around us
3. The reason why people are advised not to watch the Solar Eclipse 2020 with naked eyes is that when the Moon in direcly between the Earth and the Sun, the rays from the Sun that reach the Earth are more powerful and can permanently damage our retina (most important part of the eye).
Q 3
Some example of scattering of light that we come across in day-to-day life are: ... At the time of sunrise or sunset, when white sunlight falls on suspended atmospheric particles, blue colour light scatters out in deep space, while red colour light scatters less, and reaches the observer on the surface of the Earth.
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