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A parallel beam of blue light 420 nm is incident on a small aperture.After passing through the aperture the beam is no longer parallel but diverges at 1 degree of incident direction.What is diameter of aperture? a)30 micr m b)15 c)24 d)34

ayusha , 8 Years ago
Grade 11
anser 1 Answers
Arun
Dear student,
 
w =.lamda/sim@
 = 420 * 10^-9 / sin(pi/180)
= 24 micro m
 
Regards
Arun (askIITiansn forum expert)
Last Activity: 8 Years ago
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