A lens has a power +2.0
d.The type and focal length of this lens is
kissgirl:
lens is convex...
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for +2.0 the lend used is convex lens with least distant vision
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Power, P = +2.0 D
Focal Length, f = ?
We know,
Power = 1 / Focal Length (in metres)
=> P = 1 / f ( in metres)
=> f = 1 / P
=> f = 1 / 2
=> f = +0.5 m
Since the focal length is positive, the lens is Convex.
Focal Length, f = ?
We know,
Power = 1 / Focal Length (in metres)
=> P = 1 / f ( in metres)
=> f = 1 / P
=> f = 1 / 2
=> f = +0.5 m
Since the focal length is positive, the lens is Convex.
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