Question

At very high altitude, the sky appears dark. Why?

• A. Because blue light bends more than red light at very high altitudes
• B. Because at very high altitude, scattering is not prominent
• C. Because red is least scattered by fog or smoke
• D. Because blue light is not able to reach human eyes

Answer 1

The correct option is B

Because at very high altitude, scattering is not prominent

The scattering of the light takes place because of the particles present in the atmosphere. At high altitudes, due to the absence of the atmosphere, the scattering of light does not take place. Hence, the sky appears dark to the passengers flying at high altitudes.