white light consist of a mixture of seven different colour
the refractive index of glass is different from each constituent colour of white light
the speed of each colour of light in the glass is proportional to the refractive index of glass for each colour
the speed of each colour of light in the glass is proportional to the angle of refraction in he prism
Explanation
Video Explanation
No video available
Post your Contribution
Discussions (4)
The correct answer is B: the refractive index of glass is different for each constituent color of white light.
Dispersion of white light by a glass prism occurs because each color of light has a slightly different wavelength and is refracted (or bent) by the glass at a slightly different angle. This is due to the fact that the refractive index of glass varies slightly depending on the wavelength of light.
Here's why the other options are incorrect:
A. White light does consist of a mixture of seven different colors (the visible spectrum), but this is not the primary reason for dispersion.
C. The speed of each color of light in the glass is related to the refractive index, but it's not directly proportional.
D. The speed of each color of light in the glass is not directly proportional to the angle of refraction in the prism.
When white light passes through a prism, the different colors are refracted at slightly different angles, causing them to spread out and form a spectrum. This is known as dispersion, and it's the principle behind rainbows and many other optical phenomena.
the answer to this qquestion should be C because constitutents of white light( Roygbiv) treavels at diffrent speed. and also because of a change in medium of transfer of light(refraction)
