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IIT JEE Advanced 2007 Paper 2

Paragraph for Questions 17–19:
The figure shows a surface XY separating two transparent media, medium-1 and medium-2. The lines ab and cd represent wave fronts of a light wave traveling in medium-1 and incident on XY. The lines ef and gh represent wave fronts of the light wave in medium-2 after refraction.

Question : 18

Total: 66

The phases of the light wave at c, d, e and f are ϕc,ϕd,ϕe and ϕf, respectively. It is given that ϕc ≠ ϕf .

ϕc cannot be equal to ϕd
ϕd can be equal to ϕe
(ϕd–ϕf) is equal to (fc–ϕe)
(ϕd–ϕc) is not equal to (ϕf–ϕe)

Validate

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