Two identical monochromaticlight sources A & B intensity `10^(-15)W//m^(2)` produce wavelength of light `4000sqrt(3)Å` A glass of thickness 3mm is placed in the path of the ray as shown in figure the glass has a varible refractive index `n=1+sqrt(x)` where x (in mm) is distance of plate from left to right calculate total intensity at focal points F of the lens.

A screen is placed at a distance of 5 cm from a point source. A 5 mm thick piece of glass of refractive index 1.5 is placed between them. What is the length of optical path between the source and the screen ?

In a modified Young's double slit experiment a monochromatic uniform and parallel beam of light of wave length 6000Å and intensity (10/pi)Wm^(-2) is incident normally on two circular apertures A and B of radii 20009Å and refractive index 1.5 for the wavelength of 6000Å is placed in front of aperture. A. Calculate the power (in watt) received at the focal spot F of the lens. The lens is symmertrically placed with respect to the apertures. Assume that 10% of the power received by each aperture goes in the originally direction and is brought to the focal spot.

A central fringe of the interference pattern produced by a light of wavelength 6000Å is shifted to the position of 5th bright firnge when a glass plate of refractive index 1.5 is introduced in the path of the ray. Calculate the thickness of the glass plate.

There is an insect a cabin eying towards thick glass plate P_(1) , Insect sees the images of light source acrss the glass plate P_(1) outside tha chain. Cabin is made of thick glass plates of refractive index mu = (3)/(2) and thickness 3cm. Insect is eying from the middle of the cabin as shown in figure. (glass plates are partially reflective and consider only paraxial rays) At what distance (from eye of insect) will the eye see first image?

There is an insect a cabin eying towards thick glass plate P_(1) , Insect sees the images of light source acrss the glass plate P_(1) outside tha chain. Cabin is made of thick glass plates of refractive index mu = (3)/(2) and thickness 3cm. Insect is eying from the middle of the cabin as shown in figure. (glass plates are partially reflective and consider only paraxial rays) At what distance (from eye of insect) will the eye see second image ?

There is an insect a cabin eying towards thick glass plate P_(1) , Insect sees the images of light source acrss the glass plate P_(1) outside tha chain. Cabin is made of thick glass plates of refractive index mu = (3)/(2) and thickness 3cm. Insect is eying from the middle of the cabin as shown in figure. (glass plates are partially reflective and consider only paraxial rays) At what distance (from eye of insect) will the eye see the image ?

A ray of light is icncident at anangle of 60^@ on one face of a ractangular glass slab of thickness 2sqrt(3) mm refractive index sqrt(3) , Calculate the lateral shift produced in mm.

A ray of light is icncident at anangle of 60^@ on one face of a ractangular glass slab of thickness 2sqrt(3) mm refractive index sqrt(3) , Calculate the lateral shift produced in mm.

In an ideal double slit experiment when a glass plate having refractive index 1.5 and thickness t is placed in the path of interfered light rays of wavelength lambda then the intensity remains unchanged at the place where the central maximum was previously formed. Then the minimum thickness of the glass plate is