The focal length of a convex lens depends upon |
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a) |
Frequency of the light ray |
b) |
Wavelength of the light ray |
c) |
Both (a) and (b) |
d) |
None of these |
The focal length of a convex lens depends upon |
|||
a) |
Frequency of the light ray |
b) |
Wavelength of the light ray |
c) |
Both (a) and (b) |
d) |
None of these |