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 4200A incident normally on the glass plates is reflected, an interference pattern of 30 fringes is observed. If the wavelength of light used is taken 7000A instead of 4200A, the number of fringes observed will be?
A = Angstrom
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 4200A incident normally on the glass plates is reflected, an interference pattern of 30 fringes is observed. If the wavelength of light used is taken 7000A instead of 4200A, the number of fringes observed will be?
A = Angstrom
A = Angstrom
Ankita Karmakar , 7 Years ago
Grade 12th pass
