Q1
The splitting of white light into colours is called:
Adispersion
Breflection
Crefraction only
Dabsorption
CBSEClass 10 (CBSE)ScienceCh 10 · Topic 2
Dispersion and Atmospheric Phenomena
Learning about light dispersion and phenomena like the rainbow and blue sky.
Core concept
A rainbow forms when sunlight is refracted, dispersed, and internally reflected within water droplets suspended in the air after rain, splitting sunlight into its spectrum of colours. The sky appears blue because Earth's atmosphere scatters shorter-wavelength blue light more than longer-wavelength red light (a phenomenon called Rayleigh scattering), while sunsets appear reddish-orange because sunlight travels through more atmosphere at a low angle, scattering away most blue light and leaving mainly red/orange wavelengths to reach our eyes.
Exam highlight
Key diagram
Keywords worth remembering
Trending
dispersion and atmospheric phenomenacbse class 10
Most searched
CBSE class 10 dispersion and atmospheric phenomena
Quick revision
Study resources
Notes & downloads
Quick notes
• Dispersion splits white light into VIBGYOR colours due to differing wavelengths bending differently.
• A rainbow forms through refraction, dispersion, and internal reflection in water droplets.
• The sky appears blue due to Rayleigh scattering of shorter blue wavelengths.
• Sunsets appear red/orange because most blue light scatters away over the longer atmospheric path.