A thin equiconvex lens of refractive index 3/2 and radius of curvature 30 m is put in water (refractive index = Its focal length is |
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a) |
0.15 m |
b) |
0.30 m |
c) |
0.45 m |
d) |
1.20 m |
A thin equiconvex lens of refractive index 3/2 and radius of curvature 30 m is put in water (refractive index = Its focal length is |
|||||||
a) |
0.15 m |
b) |
0.30 m |
c) |
0.45 m |
d) |
1.20 m |