3 Interference fringes are produced by monochromatic light

Last updated: 6/13/2023

3 Interference fringes are produced by monochromatic light falling normally on a wedge shaped film of cellophane whose refractive index is 1 4 The angle of wedge is 20 seconds of arc and the distance between successive fringes is 0 25 cm Calculate the wavelength of light used