2 lens have a power of 1.2D 2.-2D WHAT IS THE NATURE AND FOCAL LENGTH OF EACH LENS?
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1) 2D
Nature: Convex lens
Focal length: 1/2 = 0.5m
2) -2D
Nature: Concave lens
Focal length: 0.5m ( since length can't be negative)
Nature: Convex lens
Focal length: 1/2 = 0.5m
2) -2D
Nature: Concave lens
Focal length: 0.5m ( since length can't be negative)
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