NEET Physics Wave Optics Polarisation MCQs

A beam of unpolarized light is incident on a series of three polarizing sheets. The transmission axis of the first sheet makes an angle of $30^\circ$ with the vertical. The second sheet's axis is oriented at $45^\circ$ to the first, and the third sheet's axis is at $90^\circ$ to the first. What fraction of the incident light intensity is transmitted through the entire system?

Circularly polarized light is incident on a linear polarizer. What fraction of the incident light intensity is transmitted?

A quarter-wave plate is designed for light of wavelength $\lambda$. What thickness of the same birefringent material would be needed for a half-wave plate at the same wavelength?

Unpolarized light is incident on two polarizers whose transmission axes are at an angle $heta$ to each other. For what value of $heta$ is the intensity of the transmitted light $1/4$ of the incident intensity?

A beam of light is passed through a polarizer and then an analyzer. When the transmission axes of the polarizer and analyzer are parallel, the transmitted intensity is $I_0$. If the analyzer is rotated by an angle $\phi$ such that the transmitted intensity becomes $I_0/2$, and then a third polarizer is inserted between the original polarizer and analyzer with its transmission axis at $45^\circ$ to the first polarizer, what will be the final transmitted intensity?

A plane polarized light is incident on a polarizer. If the intensity of transmitted light is $I_0/4$, what is the angle between the plane of polarization and the transmission axis of the polarizer?

Which phenomenon is the best evidence for the transverse nature of light waves?

What happens when unpolarised light is passed through a Polaroid?

Which of the following is not a method of producing polarised light?

At what angle of incidence is reflected light completely polarised when reflected from a surface with a refractive index of 1.5?