Tbr light and optics

[yjj8817]

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For question 11, I do understand that increase in incident angle leads to increase in refracted angle. But why would that lead to more dispersion? Wouldn't all color lights show increase in refracted angle?

The answer is c.

 

[erythrocyte666]

(1/n) sin (incident angle) = sin (refracted angle)
So you know from the phenomenon of chromatic dispersion that each of the different colors of light will have slightly different indices of refraction within the same medium, right?
So if you plugged in increasingly large incident angles, you'll see increasingly greater differences in refracted angles of the different colors of light --> that's why they disperse more

 

[yjj8817]

(1/n) sin (incident angle) = sin (refracted angle)
So you know from the phenomenon of chromatic dispersion that each of the different colors of light will have slightly different indices of refraction within the same medium, right?
So if you plugged in increasingly large incident angles, you'll see increasingly greater differences in refracted angles of the different colors of light --> that's why they disperse more

But this is what I got. They all experience the same increase so in the end they are not farther away from each other.

 

[yjj8817]

Oh wait nvm i got it thanks!