Question

explain measurement of wavelength of monochromatic light using biprism​

Answer 1

Answer:

ANSWER

Used a biprism to get interference pattern by division of wavefront method. The biprism consist of two active angled prisms with their bases in contact. Here two sources S

1

and S

2

are the virtual images of the fine slit S as shown in Figure. The experimental arrangement consist of a slit S the biprism ABC and the microscope M. All are mounted on an optical bench. These are adjusted at the same height and can move and rotate as required. The light emerging from the slit fall on the biprism. The edge A of the biprism divides the incident wave front into two parts. One is through upper half AB of biprism and appears to coming from virtual source S

1

. Other is from lower half AC of biprism and appears to coming virtual S

2

. The interference fringes are seen in the overlapping region XY and can be seen by the e

Explanation:

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