List of top Physics Questions on Polarization

If two particles A and B of charges \(1.6 \times 10^{-19}\,\text{C}\) and \(3.2 \times 10^{-19}\,\text{C}\) respectively are separated by a distance of 3 cm in air, then the magnitude of electrostatic force on particle A due to particle B is
A narrow slit of width 2 mm is illuminated with monochromatic light of wavelength 500 nm. If the distance between the slit and the screen is 1 m, then first minima are separated by a distance of
In Young's double slit experiment, the distance between the slits is \( 0.2 \) cm, the distance between the screen and the slits is \( 1 \) m. If the wavelength of light used in the experiment is \( 5000 \) Å, then the distance between two consecutive dark fringes on the screen is:
In Young's double slit experiment, the wavelength of monochromatic light is increased by 20% and the distance between the two slits is decreased by 25%. If the initial fringe width is 0.3 mm, then the final fringe width is
In Young's double slit experiment, the distance between the slits is \( 0.2 \) cm, the distance between the screen and the slits is \( 1 \) m. If the wavelength of light used in the experiment is \( 5000 \) Å, then the distance between two consecutive dark fringes on the screen is:
In Young's double slit experiment, the wavelength of monochromatic light is increased by 20% and the distance between the two slits is decreased by 25%. If the initial fringe width is 0.3 mm, then the final fringe width is
In Young’s double slit experiment, the wavelengths of red and blue lights used are \(7.5 \times 10^{-5}\) cm and \(5 \times 10^{-5}\) cm respectively. If the \(n^{th}\) bright fringe of red color coincides with \((n+1)^{th}\) bright fringe of blue colour, then the value of \( n \) is
For an observer on the earth, if a spectral line of wavelength $6600~\mathring{A$ emitted by a star is found to be redshifted by $22~\mathring{A}$, then the star is}
The intensity of transmitted light when a polaroid sheet, placed between two crossed polaroids at \(22.5^\circ\) from the polarization axis of one of the polaroids (\(I_0\) is the intensity of polarised light after passing through the first polaroid):
In the given circuit, the current in resistance R3 is :
Resistance
Three polaroid sheets are co-axially placed as indicated in the diagram. Pass axes of the polaroids 2 and 3 make 30° and 90° with pass axes of polaroid sheet 1. If \( I_1 \) is the intensity of the incident unpolarised light entering sheet 1, the intensity of the emergent light through sheet 3 is
Three polaroid sheets
The relation \( I = I_0 \cos^2 \theta \) is (I\( _0 \) - Intensity of incident light on the analyser, I - intensity of emergent light from the analyser, \( \theta \) - angle between plane of polarization and the axis of analyser)
Two polaroid P1 and P3 are placed such that their pass-axis are mutually perpendicular. Another polaroid P2 is rotated between P1 and P3. For what angle θ between P1 and P2 the intensity of light emerging from P3 will be maximum?
If $θ_p$ is the polarizing angle for a glass plate of refractive index μ and critical angle $θ_c$, then
The polarizability of atoms in the air molecule is \( 9.7 \times 10^{-41} \, \text{cm}^2/\text{V} \). The radius of the atom of an air molecule is:
Circularly polarized light is produced if the amplitudes of the ordinary and extraordinary rays are equal and there is a phase difference of:

A beam of unpolarized light is incident on a polarizer. The intensity of the transmitted light is measured as it passes through the polarizer. If the angle between the light's initial direction and the axis of the polarizer is \( \theta \), what is the intensity of the transmitted light? The intensity of the transmitted light is given by Malus' law: \[ I = I_0 \cos^2 \theta \]
where:
\( I_0 \) is the intensity of the unpolarized light before passing through the polarizer,
\( \theta \) is the angle between the light's initial direction and the axis of the polarizer.