Question

(a) Radiation of violet, yellow and red colours are made to fall on a glass slab. Which of the three
will suffer (i) maximum (ii) minimum, lateral displacement? Why?​

Answer 1

Answer:

violet will displace the minimum as it deviates less while yellow will displace lateral while red will displace the maximum as it deviates the most

Answer 2

i) Maximum lateral displacement is observed in violet due to shortest wavelength

ii) Minimum lateral displacement is observed in red due to longest wavelength

Explanation:

As we move from violet towards red in the visible spectrum VIBGYOR the wavelength gets longer, i.e. one oscillation or one cycle of the energy covers more distance as the ray is closer to red.

• The refraction of the light in violet rays is more deviated because because it has shortest wavelength of the given light rays and hence it has more bending points inside the different medium. Where as yellow light bends lesser than violet light but red light having the longest wavelength bends the least.

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TOPIC: lateral displacement of light

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