Diffraction & Polarisation: JEE Questions & Solutions

Which of the following are true for a single slit diffraction? A. Width of central maxima increases with increase in wavelength keeping…

When an unpolarized light falls at a particular angle on a glass plate (placed in air), it is observed that the reflected beam is linearly…

An unpolarised light is incident at an interface of two dielectric media having refractive indices of 2 (incident medium) and 2√3…

A transparent film of refractive index 2.0 is coated on a glass slab of refractive index 1.45. What is the minimum thickness of transparent…

In a Young's double slit experiment, three polarizers are kept as shown in the figure. The transmission axes of P₁ and P₂ are orthogonal to…

If the measured angular separation between the second minimum to the left of the central maximum and the third minimum to the right of the…

Two polarisers P₁ and P₂ are placed in such a way that the intensity of the transmitted light will be zero. A third polariser P₃ is…

A parallel beam of monochromatic light of wavelength 5000 Å is incident normally on a single narrow slit of width 0.001 mm. The light is…

In a single slit diffraction pattern, a light of wavelength 6000 Å is used. The distance between the first and third minima in the…

The diffraction pattern of light of wavelength 400 nm diffracting from a slit of width 0.2 mm is focused on the focal plane of a convex…

A beam of unpolarized light of intensity I₀ is passed through a polaroid A and then through another polaroid B which is oriented so that…

Three identical polaroids P₁, P₂, and P₃ are placed one after another. The pass axis of P₂ and P₃ are inclined at angles of 60^° and 90^°…

Two polaroide A and B are placed in such a way that the pass-axis of polaroids are perpendicular to each other. Now, another polaroid C is…

‘n’ polarizing sheets are arranged such that each makes an angle 45^° with the preceding sheet. An unpolarized light of intensity I is…

Unpolarised light of intensity 32 Wm⁻² passes through the combination of three polaroids such that the pass axis of the last polaroid is…

A single slit of width a is illuminated by a monochromatic light of wavelength 600 nm. The value of a for which the first minimum appears…