Physics
Which of the following statements is true when we see ''rainbow' ?

The sky remains clear and the sun is at lower position in the sky
The Sun remains behind us and we face raindrops
We face sun and raindrops
In light rainfall, we face Sun

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Physics
Why two thin shirts can keep us warmer than a single thick shirt in winter ?

Air layer between two shirts behaves like insulating media
Air layer between two shirts works as good conductor
Two thin shirts become thicker so prevent transmission of heat
No radiation of heat takes place

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