11.
What will be the effect, if any, on the fringe width in Young’s double slit experiment if red light is used in place of violet light ?
Fringe width is given by —
![straight B space equals space λD over straight d](/application/zrc/images/qvar/IPHEN12114004.png)
Triangle width is directly proportional to the wavelength of light used.
So,
λred > λvoilet
Therefore,
![straight beta subscript red space greater than thin space straight beta subscript violet](/application/zrc/images/qvar/IPHEN12114004-1.png)
632 Views