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Two slits in Young's double slits experi...

Two slits in Young's double slits experiment are spaced 0.1 millimeter apart. If the fringe width is obtained as 5 mm on screen 1.5m away from slits. Find the wavelength of the light used.

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Use , `beta=(lambdaD)/d`
`5xx10^(-3)=(lambdaxx1.5)/(0.1xx10^(-3))`
`lambda=3.33xx10^(-7)`m
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