Assertion (A) : Red light signals are used to stop the vehicles on the road. Reason (R) : Red coloured light is scattered the most so as to be visible from a large distance.

Free previous-year papers & practice for JEE, NEET and CBSE Boards.

Free previous-year papers & practice for JEE, NEET and CBSE Boards.

Blue Colour of Sky Due to Scattering, Red Colour of Sun at Sunrise and Sunset | PadhAiPro

Question

Assertion-ReasonBlue Colour of Sky Due to ScatteringRed Colour of Sun at Sunrise and SunsetCBSE PYQ

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When a beam of white light passes through a region having very fine dust particles, the colour of light mainly scattered in that region is :

Why does the sky appear dark instead of blue to an astronaut?

Blue Colour of Sky Due to Scattering

Assertion (A): sun appears red during sunrise and sunset. Reason (R): Scattering of light is directly proportional to the wavelength.

Give reasons for the following:

When and where does a rainbow appear in the sky ? Draw a labelled ray diagram to show its formation.

What is scattering of light ? Why does the clear sky appear blue ?