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Four polaroids are placed such that the optic axis of each is inclined at an angle of 30∘ with the optic axis of the preceding one. If unpolarised light of intensity I_(0) falls on the first polaroid, the light transmitted from the fourth is Four polaroids are placed such that the optic axis of each [...]

The graph showing the dependence of intensity transmitted light on the angle between polariser are analyser, is is The graph showing the dependence of intensity transmitted light on the angle between polariser are analyser November 17, 2020 Category: Cengage NEET by C.P Singh , Chapter 16 - Wave Motion and Waves on a String , [...]

When an unpolarized light of intensity I0 is incident on a polarizing sheet, the intensity of the light which does not get transmitted is: the intensity of the light which does not get transmitted is When an unpolarized light of intensity I0 is incident on a polarizing sheet November 17, 2020 Category: Cengage NEET by [...]

A beam of light AO is incident on a glass slab (μ=1.54) in a direction as shown in the diagram. The reflected ray OB is passed through a Nicole prism. On viewing through the Nicole prism, we find that on rotating the prism. (Given tan 1.54 = 57^0 ) A beam of light AO is [...]

When the angle of incidence on a material is 60∘, the reflected light is completely polarized. The velocity of the refracted ray inside the material is (in ms^−1) the reflected light is completely polarized. The velocity of the refracted ray inside the material is (in ms^−1) When the angle of incidence on a material is [...]

Light of wavelength 6328Å is incident normally on a slit having a width of 0.2mm. The distance of the screen from the slit is 0.9m. The angular width of the central maximum is Light of wavelength 6328Å is incident normally on a slit having a width of 0.2mm. The distance of the screen from the [...]

A single slit of width 0.20 mm is illuminated with light of wavelength 500 nm. The observing screen is placed 80 cm from the slit. The width of the central bright fringe will be A single slit of width 0.20 mm is illuminated with light of wavelength 500 nm. The observing screen is placed 80 [...]

Plane polarised light is passed through a polaroid. On viewing through the polaroid we find that when the polaroid is given one complete rotation about the direction of light Plane polarised light is passed through a polaroid. On viewing through the polaroid we find that when the polaroid is given one complete rotation about the [...]

The amplitude modulated (AM) radio wave bends appreciably round the corners of a 1m×1m board but the frequency modulated (FM) wave only negligible bends. If the average wavelengths of AM and FM waves are λ0 and λr. glass and water decreases in the following order The velocity of light in diamond November 17, 2020 Category: [...]

Interference fringes were produced in young’s double slit experiment using light of wave length 5000Å,When a film of material 2.5×10^−3cm thick was placed over over of the slits, the fringe pattern shifted by a distance equal to 20 fringe width. The refractive index of the material of the film is Interference fringes were produced in [...]