Monochromatic green light , wavelength =554nm, illustrates two parallel, narrow slits 7.7micrometer apart. Calculate the angular position of the third- order (m=3) bright fringe(a)in radians and (b)in degrees.
Salman khan , 6 Years ago
Grade 12th pass
1 Answers
Arun
Last Activity: 6 Years ago
d = 7.7 x 10 -6 m, m=3, λ= 554 nm = 554 x10-9 m
θ = ? in radians and in degrees.
Use: for the bright fringe: d sinθ = mλ (put m=3):
Answers: (a)θ=0.216 radians (b) θ =12.5 degrees
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