Plano convex lens of Glass has radius of curvature 30cm if the class has refractive index of 1.6 find the focal length of the lens
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Radius of curvature = 30cm
F=R/2
F=30/2
F=15cm
Refractive index doesn't matter in focal lenght
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Radius of curvature
R.I =1.6 : f = ?
From lens makes formula
1/f = (x-1) (1/R ,1/R)
1/f =(1.6-1)(1/3)-(1/3)
1/f=0.6 (1/30)
F = 50
R.I =1.6 : f = ?
From lens makes formula
1/f = (x-1) (1/R ,1/R)
1/f =(1.6-1)(1/3)-(1/3)
1/f=0.6 (1/30)
F = 50
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