Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction+ReflectionEasy2 minPYQ_2008

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Two thin lenses of focal lengths $f_{1}$ and $f_{2}$ are in contact and coaxial. The power of the combination is

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If two thin lenses of focal lengths $f_{1}, f_{2}$ are placed in contact coaxially, then equivalent focal length of combination is $\frac{1}{F} = \frac{1}{f _{1}} + \frac{1}{f _{2}} - \frac{0}{f _{1} f _{2}} = \frac{1}{f _{1}} + \frac{1}{f _{2}}$ Power for the combination is $P = \frac{1}{F} = \frac{1}{f _{1}} + \frac{1}{f _{2}} = \frac{f _{1} + f _{2}}{f _{1} f _{2}}$

Stream:NEETSubject:PhysicsTopic:Geometrical OpticsSubtopic:Refraction+Reflection

⏱ 2mℹ️ Source: PYQ_2008

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