Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
MHT CET202527 Apr 2025Evening ShiftPhysicsWave OpticsActual

A ray of light is incident at polarising angle ' ' on air-glass interface, if ' _ a ' and ' _ g ' are the wavelengths of light in air and glass respectively, then

Options

  1. A_g= _a
  2. B_a= _g ^2
  3. C_g= _a ^2
  4. D_a= _g

Correct answer

A. _g= _a

Step-by-step solution

According to Brewster's law for light incident at the polarizing angle on an air-glass interface, = _g , where _g is the refractive index of glass relative to air. The refractive index may be expressed as _g = c / v_g , with c and v_g representing the speed of light in air and glass, respectively. Since frequency remains constant across media, c = f _a and v_g = f _g , leading to _g = _a / _g . Equating both expressions for _g gives = _a / _g , which rearranges to _g = _a . Final answer: A

Practice Wave Optics on Quantrex Academy →

More from Wave Optics

If the intensity of the central maximum in the Young's double slit experiment is I₀ , what will be the intensity at the same region when one of the slits is blocked by an opaque ob 2026The width of the fringes obtained with a light of wave length 6.2 10⁻⁸ m is 1.82 mm. If the whole apparatus is immersed in a liquid of refractive index 1.3, what will be the width 2026In a single slit diffraction experiment, the diffraction pattern is observed on a screen placed at a distance of 2m from the slit of 1mm width. If the distance between the first da 2026A diffraction pattern due to a single slit of width 0.12mm is obtained with a blue green light of wavelength 500 nm. The angular separation between central maximum and second order 2026In a Young's double slit experiment, the slit separation is 1.5 mm. The setup is illuminated simultaneously by light of wavelengths 6000 Å and 8000 Å. The screen is placed at a dis 2026In a Young's double slit experiment, the slits are separated by 0.5 mm. Fringes are obtained on a screen which is placed at distance 1 m away from the slits. When the screen is mov 2026In Young's double slit experiment, how many maxima can be seen on a screen (including central maxima) if d = 5 2 (where is wavelength of light and d is distance between the two sli 2026In an experiment, two polariods are arranged such that the intensity of the polarised light emerged from the second polaroid is 37.5 % of the intensity of the unpolarised light inc 2025 Full Wave Optics list All MHT CET PYQs