White light is incident on a very thin glass plate of thicness `1 mu m`. Index of refraction for the glass is 1.5. Which wavelengths in the visible region (400 nm to 700 nm) are strongly transmitted by the glass plate ?

Explanation

To determine which wavelengths in the visible region (400 nm to 700 nm) are strongly transmitted by a very thin glass plate of thickness 1 µm and refractive index 1.5, we will apply the condition for constructive interference in thin films.

### Step-by-Step Solution:

1. **Identify the Given Values:**
- Thickness of the glass plate, \( t = 1 \, \mu m = 1 \times 10^{-6} \, m \)
- Refractive index of the glass, \( \mu = 1.5 \)
- Wavelength range of visible light, \( \lambda = 400 \, nm \) to \( 700 \, nm \)
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