The distance between two consecutive dark bands in a Young's experiment is `0.32` mm when red light of wavelenght 6400Å is used. By how much will this change if yellow light of wavelength 5900Å is uded with the same setting.

Options

A. `0.25 m`
B. `0.025 mm`
C. `1.025 mm`
D. `1.25 mm`

Answer

B

Explanation

`(beta_(2))/(beta_(1))=(lamda_(2))/(lamda_(1))" ":.beta_(2)=(5900xx0.32)/(6400)=0.295mm`
`:.Deltabeta=beta_(1)-beta_(2)=0.025mm`