In a biprism experiment, the distance of the 20th bright band from the centre of the interference pattern is 8 mm. The distance of the 30th bright band from the centre is

In bipism experiment, the distance of 20^(th) bright band from the centre of the interference pattern is 8 mm. The distance of the 30^(th) bright band is

In a biprism experiment, the distance of the eighth bright band from the centre of interference pattner is 4 mm. The distance of the twelfth bright band from the centre of the interference pattner is

The distance of n^(th) bright fringe from the centre of the interference pattern is

The distance of the 10th dark band from the centre of interference pattern is 28.5 mm. the band width is

The distance of nth bright band from centre band is given by