Home › CBSE Class 10 › Physics › The Human Eye and the Colourful World › The phenomenon of bending of light caused by gas…
The phenomenon of bending of light caused by gas density variations in the atmosphere is called:
AAtmospheric refraction
BDiffuse reflection
CScattering
DPolarisation
Answer & Solution
Correct answer: A. Atmospheric refraction
1. The atmosphere has layers of different temperature and density.
2. Different densities mean different refractive indices.
3. Light therefore bends as it passes through changing layers.
4. This bending is called atmospheric refraction.
5. It causes twinkling stars, advanced sunrise, and delayed sunset.
6. So the phenomenon is atmospheric refraction.
_Source: NCERT Class 10 Science Ch 11 'Human Eye and the Colourful World'_
Related questions
Light from a star changes colour during twinkling because:The ability of the eye to focus on objects at different distances is called:Tyndall effect — the visible path of a beam of light through a colloid — is a result of:An old man cannot read a book held close but can see distant scenes clearly. The defect anTwinkling of stars is caused by:The reddish appearance of the sun at sunrise and sunset is due to:The sky appears BLUE because of:A rainbow is formed by: