Question
Mon January 30, 2012 By:
 

how does focal length influence the refraction of light? explain

Expert Reply
Tue January 31, 2012
for lens:
1/f  =(?-1)(1/R1  -1/R2)
here, f= focal length of the lens.
?=refractive index
R1,R2=radius of curvature of two faces of the lens
so if the refractive index of the material opf the lens is more then the focal length will be less. ie light will bend more.
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