Select the correct answer. When a ray of monochromatic light of red colour passes through a prism, we get on the other side
(A) only one red coloured band of light (B) seven bands of light of colours violet, indigo, blue, green, yellow, orange and red (C) only one band of light of green colour (D) no band of light at all.
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Answer is Red
Explanation:
- The light which have more wavelength will scatter less and will have less dispersion.
- When white light undergoes dispersion from prism then red colour will deviate least and violet deviate most.
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Answer : option (A) only red coloured band of light
explanation : when a ray of light passes through a prism, it disperses because the beam of light is made from its different components, all components have their own wavelength so, they bend independently after refractions. that's why they show dispersion. but in case of monochromatic red colour, it can't disperse. because monochromatic light doesn't have different components. it is itself a single and specific wavelength. but it follows law of refraction. after all, it is a part of light which shows law of refraction.
Therefore, when a ray of monochromatic light of red colour passes through a prism, we get on the other side ony one red coloured band of light.
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