PPT Slide

Position of Fringes

• Bright fringes at d sin? = m ? , m=0,1,2,…

• sin? = m (?/d)

y/D = tan ?

e.g. ?=546 nm, D=55cm, d=.12mm

hence ?/d ~ 4.6 x 10-3

Bright fringes for

sin? = m (?/d) <ə

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