Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensEasy2 minPYQ_2020

PhysicsEasysingle choice

Two thin lenses of focal length $20 cm$ and $25 cm$ are in contact. The effective power of the combination is

Answer:

Solution:

According to the question

$P_{1} = \frac{100}{20} = 5 D, P_{2} = \frac{100}{25} = 4 D$

Effective power $P = P_{1} + P_{2}$

$= 5 + 4 = 9 D$

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

⏱ 2mℹ️ Source: PYQ_2020

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