Wave Optics Tes...

A screen is placed 50 cm from a single slit, which is illuminated with 6000 Å light. If distance between the first and third minima in the diffraction pattern is 3 mm, the width of the slit is

In Young\'s double slit experiment, the fringes are displaced by a distance x when a glass plate of one refractive index 1.5 is introduced in the path of one of the beam. When this plate in replaced by another plate of the same thickness, the shift of fringes is (3/2)x. The refractive index of the second plate is

Two waves of equal amplitude and frequency interfere each other. The ratio of intensity when the two waves arrive in phase to that when they arrive 90° out of phase is

The figure here gives the electric field of an EM wave at a certain point and a certain instant. The wave is transporting energy in the negative z direction. What is the direction of the magnetic field of the wave at the point and instant

A parallel plate capacitor with plate area A and separation between the plates d, is charged by a constant current i, consider a plane surface of area A/2 parallel to the plates, and drawn symmetrically between the plates, the displacement current through this area, will be

In the Young's double slit experiment using a monochromatic light of wavelength λ, the path difference (in terms of an integer n) corresponding to any point having half the peak intensity is

In Young's double slit experiment, one of the slit is wider than other, so that amplitude of the light from one slit is double of that from other slit. If I_m be the maximum intensity, the resultant intensity I, when they interfere at phase difference ϕ), is given by

Critical angle for certain medium is sin ^-1 (0.6). The polarising angle of that medium is

In a Young's double slit experiment (slit distance d) monochromatic light of wavelength λ, is used and the fringe pattern observed at a distance L from the slits. The angular position of the bright fringes are