Question

In fresnels biprism the value of wavelength depend on

Answer 1

Fresnel biprism can be used to to determine the wavelength of given monocromatic with help of expression , λ = dβ/D

Where d is the separation between two point sources and D is the speration between source and screen and β is the fringe width as shown in figure.

Hence , wavelength of monocromatic light depends upon

1. fringe width.

2. separation between sources and sources.

3. Speration between source and screen.