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Q: When white light, which is a mixture of seven colours, passes through a prism, why is it dispersed?
  • A. White light emits 7 colors throughout the prism.
  • B. 7 colors of white light pass through Glass prism at different speeds.
  • C. Colors are reflected by prisms.
  • D. 7 colors are refracted at the same speed
Correct Answer: Option B - When white light passes through a prism of glass, it is divided into seven different colours after refraction. This phenomenon is called a chromatic deflection and a group of seven colours is obtained. Character deflection is caused by the different Speed of light of different colours in a transparent material
B. When white light passes through a prism of glass, it is divided into seven different colours after refraction. This phenomenon is called a chromatic deflection and a group of seven colours is obtained. Character deflection is caused by the different Speed of light of different colours in a transparent material

Explanations:

When white light passes through a prism of glass, it is divided into seven different colours after refraction. This phenomenon is called a chromatic deflection and a group of seven colours is obtained. Character deflection is caused by the different Speed of light of different colours in a transparent material