12.
Light is incident on a block of glass at the polarizing angle. How does this polarising angle vary with the wavelength of light ?
μ = refractive index of medium
ip = Polarising angle
μ = tan ip
![straight mu space proportional to space 1 over straight lambda squared](/application/zrc/images/qvar/IPHEN12114676.png)
Hence if wavelength increases polarising angle decreases.
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