Answer Type 1 Two glass plates are touching at one end and

Last updated: 6/12/2023

Answer Type 1 Two glass plates are touching at one end and separated by a thin wire at the other end When a monochromatic parallel beam of wavelength 4200 incident normally on the glass plates is reflected an interference pattern of 30 fringes are observed If the wavelength of light used is taken 7000 instead of 4200 the number of fringes observed will be a 50 b 40 c 30 d 18