Question

why do we use two prism in fresnel biprism experiment​

Answer 1

Answer:

Holmarc's Fresnel's biprism diffraction Apparatus (Model No: HO-ED-D-07) is an instrument that demonstrates how Fresnel's Bi prism can be used to obtain fringes due to interference and to calculate the wavelength of monochromatic light.

Explanation:

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Answer 2

Answer: This may help you

Explanation:

1. In a biprism, errors can occur when the two halves are not joined properly.

2. While moving a biprism during experiments, the two halves might actually slip from the intended positions.

3. A biprism is not homogeneous thoroughout unlike a monoprism. The interface between the two prisms does not allow light to pass through perfectly.