White light is incident normally on a glass plate of thickness `0.50 xx 10^(-6)` and index of refraction 1.50. Which wavelength in the visible region (400 nm - 700 nm) are strongly reflacted by the plate ?

Explanation

To solve the problem of determining which wavelengths in the visible region (400 nm - 700 nm) are strongly reflected by a glass plate, we can follow these steps:

### Step 1: Understand the Condition for Strong Reflection
For constructive interference (strong reflection) to occur, the path difference must satisfy the condition:
\[ \Delta x = 2t = (2n - 1) \frac{\lambda}{2} \]
where:
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