SELECT * FROM question_mgmt as q WHERE id=2747 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=3 AND subId=8 AND chapterId=124 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)
In double-slit experiment using light of wavelength 600 nm, the angular width of a fringe formed on a distant screen is 0.1o. What is the spacing between the two slits?
It is given that,
Wavelength of light used, λ = 6000 nm = 600 × 10 -9 m
Angular width of fringe, θ = 0.1° = 0.1 x ¶/180 = 3.14/1800 rad
Angular width of a fringe is related to slit spacing (d) as: d = λ/θ = 600 x 10-9/3.14/1800 = 3.44 x 10-4 m
Therefore, the spacing between the slits is 3.44 x 10 -4 m.
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