In a biprism expeirment to determine the wavelenght of light, the distance between slit and eyepiece is 1,. Wavelenght of light used is 5600Å. When a convex lens is kept at a distance of 30 cm from the slit, the distance of fourth the two images is 0.7 mm. The distance of fourth dark band from the central bright band is

In a biprism experimentn the distance between slite and epepiece is 1m. If the convex lens is interposed at a distance of 30 cm from the slit, then the size of the magnified image is 0.7 mm. The distance between the two virtual images of the slits will be

In the double-slit experiment, the distance of the second dark fringe from the central line are 3 mm . The distance of the fourth bright fringe from the central line is

In a biprism experiment, the distance of the 20th bright band from the centre of the interference pattern is 8 mm. The distance of the 30th bright band from the centre is

In a biprism experiment , the distance between the slit and the focal plane of the eyepiece is 1.2 m and the wavelength of light used is 5000 overset (@)(A) . When a convex lens is interposed (between the biprism and eyepiece) the images of the slits in the two positions are 5 mm and 1.8 mm apart . The distance between the centre of the pattern and twelfth dark band is

In Young's double slit experiment wave length of light used is 5000 Å and distance between the slits is 2 mm, distance of screen from the slits is 1m. Find fringe width and also calculate the distance of 7^(th) dark fringe from central bright fringe.