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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2006

PhysicsEasysingle choice

A convex lens and a concave lens, each having same focal length of $25 cm$ , are put in contact to form a combination of lenses. The power in diopters of the combination is:

Options:

Answer:

Solution:

Focal length of lens $f_{1} = 25 cm$ focal length of concave lens $f_{2} = 25 cm$ Power of combination in dioptres $P = P_{1} + P_{2} = \frac{100}{f _{1}} + \frac{100}{f _{2}} = \frac{100}{25} + \frac{100}{- 25} = 0.$

Stream:NEETSubject:PhysicsTopic:Geometrical OpticsSubtopic:Refraction at curved surface/Lens

⏱ 2mℹ️ Source: PYQ_2006

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