QJEEAdv07Phf007: JEE Advanced 2007 Physics - Class 12 JEEAdv07Phf007 Solution: The phases of the light wave at c , d , e and f are ϕ c , ϕ d , …

Question

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The phases of the light wave at $c, d, e$ and $f$ are $ϕ_{c}, ϕ_{d}, ϕ_{e}$ and $ϕ_{f}$ respectively.

It is given that $ϕ_{c} \neq ϕ_{f}$ .

Accepted Answer

Since point c and d are on same wave front.

Therefore, $ϕ_{d} = ϕ_{c}$

Similarly, $ϕ_{e} = ϕ_{f}$

$∴ ϕ_{d} - ϕ_{f} = ϕ_{c} - ϕ_{f}$

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