Diffraction pattern is obtained using a beam of red light what happens if the red light is replaced by blue light
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we know that
Focal length is inversely proportion to n
f=1/n-1
where n is refractive index
we know that blue light has more refractive index then red colour
so focal length of convex lens will decrease when blue light is used instead of red light
Focal length is inversely proportion to n
f=1/n-1
where n is refractive index
we know that blue light has more refractive index then red colour
so focal length of convex lens will decrease when blue light is used instead of red light
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