Question
Download Solution PDFThe splitting of light into a band of colours while passing through a medium is called ________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
Dispersion of light:
- Dispersion of light is the phenomenon of splitting of a beam of white light into its constituent colours on passing through a prism.
- The band of seven colours so obtained is called the (visible) spectrum.
- The dispersion of white light occurs because the colours of white light travel at different speeds through the glass prism.
EXPLANATION:
- Dispersion of light is the phenomenon of splitting of a beam of white light into its constituent colours on passing through a prism. Therefore option 4 is correct.
- Reflection is bouncing back of light in the same medium after striking a surface. Therefore option 1 is correct.
- Refraction is bending of light when it moves from one medium to another. Therefore option 2 is correct.
- Polarisation is restricting the vibrations of a transverse wave, especially light wholly or partially in one direction. Therefore option 3 is correct.
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