1bt thr must be a conceptual approach too na
a beam of light has a small wavelength spread δλ about a central wavelength λ.the beam travels in vaccum until it enters a glass plate at an angle θ relative to the normal to the plate .the index of refraction of glass is given by nλ theangular spread δe of refracted beam
(a)δλ/n
(b)(dnλ/dλ)δλ
(c)(tane/n)(dnλ/dλ)δλ
(d)(sinθ/sine)(δλ/λ)
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10 Answers
62arrey this is not that tough
it is giventhat lamda liesbetween
λ-δλ/2, λ+δλ/2
find the emerging angle for both these incident angles and then take their differece...
Can you work out from here?
