The expression for intensity (as shown in the figure) of transmitted light when a polaroid sheet is rotated between two crossed polaroids is:
[Given: \(I_0\) is the intensity of transmitted light from polariser \(\mathrm{A}\)]

  

1. \(I = \dfrac{I_{0}}{2} \sin^{2} 2 \theta\) 2. \(I = \dfrac{I_{0}}{4} \sin^{2} 2 \theta\)
3. \(I = \dfrac{I_{0}}{2} \cos^{2} 2 \theta\) 4. \(I = \dfrac{I_{0}}{4} \cos^{2} 2 \theta\)
Subtopic:  Polarization of Light |
 54%
From NCERT
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital

Unpolarised light is incident on a plane glass surface. What should be the angle of incidence so that the reflected and refracted rays are perpendicular to each other?

1.450
2.670
3.570
4.370

Subtopic:  Polarization of Light |
To view explanation, please take trial in the course.
NEET 2026 - Target Batch - Vital
Hints