Question

in biprism experiment the distance if 20th bright band from centre of interference pattern is 8mm . calculate the distance of 30th bright band from centre ​

Answer 1

distance of 30th bright band from centre of interference pattern is 12mm.

Answer 2

Answer:

The distance of 30th bright band from center is 12 mm.

Explanation:

Given that,

In bi prism experiment the distance if 20th bright band from center of interference pattern is 8 mm.

The distance is

{tex]20 \beta= 8\ mm[/tex]

$\beta = \dfrac{8}{20}$

We know that,

The distance of nth bright band from center is

$nth = n\beta$

The distance of 30th bright band from center is

30th maxima = $30\beta$

30th maxima = $30\times\dfrac{8}{20}$

30th maxima = 12 mm

Hence, The distance of 30th bright band from center is 12 mm.