In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact.
Then the power of the combination and the total magnification in comparison to the power (p) and
magnification (m) for each lens will be, respectively–
4p and 4m
p4and 4m
4p and m4
p4 and m4

A 2 amp current is flowing through two differentsmall circular copper coils havi
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