Basic reasons

Basics reasons in our surrounding❤✌✌✌👧

"Science is the reason as well as question"

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Ques: Why humans have two eyes instead of one?

Ans We humans have two eyes because

1. It gives 180 degree vision
2. Helps to judge the object clearly.

Ques: Why food packets are flushed with Nitrogen gas?

Ans Food packets are flushed with Nitrogen gas because N2 is very less reactive gas from all other gases and prevents the food from spoiling.

Ques: Why stars appear to be twinkle at night?

Ans: Stars appears to be twinkle at night because of atmospheric refraction of light.

It can be understood as follows:

In the atmosphere there are many gases of different volume having different optical densities.

When far object light falls in the Earth's atmosphere It goes into refraction and falls on our eyes with different amount.

That's why stars 🌟🌟appear to be twinkle.

Ques: Why do we see the rainbow 🌈 in the sky only after rain?

Ans: This is because amount of water vapours in the sky after rain is too much and when the sunlight falls on the water vapours, three phenomenons are done:-

1. Refraction of light
2. Reflection of light
3. Dispersion of light

Because of these phenomenons sun's white light breaks down into it's 7 components.

Ques: Why the walls of trachea do not collapse?

Ans: Walls of trachea do not collapse because of cartilagenous rings present around it.