Assertion: The blue colour of sky appears due to the scattering of blue colour.

Reason: Blue colour has the shortest wavelength in the visible spectrum.

Option:

1)     Both assertion and reason are true and the reason is the correct explanation of assertion

2)     Both assertion and reason are true, but the reason is not the correct explanation of assertion

3)     If the assertion is true, but the reason is false

4)     If the assertion is false, but the reason is true

Question

Assertion: The blue colour of sky appears due to the scattering of blue colour.

Reason: Blue colour has the shortest wavelength in the visible spectrum.

Option:

1)     Both assertion and reason are true and the reason is the correct explanation of assertion

2)     Both assertion and reason are true, but the reason is not the correct explanation of assertion

3)     If the assertion is true, but the reason is false

4)     If the assertion is false, but the reason is true

Infinity Learn · Accepted Answer

Both assertion and reason are true and the reason is the correct explanation of assertion.
Assertion: The scattering of light depends on the wavelength of light. Light with a smaller wavelength gets scattered more.
Reason: Since blue light has the shortest wavelength in the visible spectrum, it gets scattered more and we see the blue colour in the sky. The blue colour of the sky is produced by dust particles dispersing blue light to the greatest extent possible. Therefore, both assertion and reason are true and the reason is the correct explanation of assertion. Consider the following figure for this.
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