Questions
A lens of power +2 diopter is placed in contact with a lens power -1 diopter. The combination will behave like
detailed solution
Correct option is C
P=P1+P2=+2−1=+1 dioptre, lens behaves as convergent ,F=1P=11=1 m=100 cm.Similar Questions
Two thin lenses of focal lengths f1 and f2 are in contact. The focal length of this combination is
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