In a Fresnel’s diffraction arrangement, the screen is at a distance of 2 meter from a circular aperture. It is found that for light of wavelengths 
and 
the radius of 
zone for 
coincides with the radius of 5 th zone for 
Then the ratio 
is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
It is given that 
and 
are equal. Therefore 
or 
or 
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