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A parallel beam of monochromatic light of wavelength 5000angestrom
Is iincident normally on narrow slit of wavelength 0.001mm the first minimum will formed for angle of diffraction equal to

Neha , 6 Years ago
Grade 12th pass
anser 1 Answers
Arun

Last Activity: 6 Years ago

Dear student
 
for first minima
 
a sin theta = n * lambda 
 
sin theta = lamda/a = 0.5
 
hence theta = 30 degree
 
hope it helps
 
Regards
Arun (askIITians forum expert)
 
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