Light d of wavelength `5000Å` is incident normally on a slite. The first minimum of the distance of 5 mm from the central maximum on a screen placed a

Light d of wavelength `5000Å` is incident normally on a slite. The first minimum of the distance of 5 mm from the central maximum on a screen placed at a distance of 2 m from the slit. The width of slit is
A. `0.1mm`
B. `0.2mm`
C. `0.3 mm`
D. `0.4 mm`

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

Correct Answer - B
`asintheta=nlamda`
`:.a=(1xx5xx10^(-7)xx2)/(5xx10^(-3))=0.2mm`

4 views Answered 2023-02-05 15:29

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