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If in YDSE set up screen is shifted towards plane of slit by 0.3 meter then fringe width changes by 0.4 mm.

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If in YDSE set up screen is shifted towards plane of slit by 0.3 meter then fringe width changes by 0.4 mm. Determine wavelength 'λ' of light.

(a) 10-3/3 mm

(b) 7/3 x 10-3 mm

(c) 4/3 x 10-3 mm

(d) 5/3 x 10-3 mm

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(c) 4/3 x 10-3 mm

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