In the YDSE conducted with white light (4000Å-7000Å), consider a point `P_(1) on the screen at` `y_(1)` = 0.2mm. Determine the wavelengths which form maxima at these points :

In the YDSE conducted with white light (4000Å-7000Å), consider a point P_(1) y_(1) = 0.2mm. Determine the wavelengths which form maxima at these points :

Two monochromatic coherent sources of wavelength 5000 Å are placed along the line normal to the screen as shown in the figure. (a) Determine the condition for maxima, at the point P. (b)Find the order of the central bright fringe if d = 0.5 mm, D = 1 m.

If the wavelength of light is 4000 Å , then the number of waves in 1 mm length will be

If the wavelength of light is 4000 Å , then the number of waves in 1 mm length will be

To prodce inteference fringes in Young' s double slit experiment light consisting of two wavelengths of 6500 Å and 5200 Å is used. (i) Determine the distance of the third maxima from the central maxima for light of wavelength 6500 Å . (ii) At what minimum distance from the central maxima will the bright points (maxima) for two waves superpose? Given that distance between the two slits is 2 mm and the distance of the screen from the plane of the slits is 120 cm.