one convex lens of power 4D and concave lens of power -2.5 D are put in contact .The combination behaves as a a)convex lens b)concave lens c) convex mirror d) concave mirror GIVE REASON PLS
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hey
power of combination of lens will be
=4 + ( -2.5)
=+1.5 D
and we know convex lens has positive power
so answer will be convex lens
power of combination of lens will be
=4 + ( -2.5)
=+1.5 D
and we know convex lens has positive power
so answer will be convex lens
Rahul1301:
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