In a biprism experiment, the distance between 4th an 13th bright fringes is measured when
Channel: Doubtnut
Date: 2021-11-02

In a biprism experiment, the distance between 4th an 13th bright fringes is measured when light of wavelength `6 xx 10^(-7)` m is used. On replaceing the source by another of different wavelength without disturbing the adjustment of the apparatus , it is found that the distance between 5th and 15th bright fringes is the same as measured before, what is the wavelength of light used?