Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsDispersionEasy2 minPYQ_2020

PhysicsEasysingle choice

Which one of the following spherical lenses do not exhibit dispersion? The radii of curvatures of the surfaces of the lenses are as given in the diagrams.

Options:

Answer:

Solution:

$\frac{1}{f} = (μ - 1) (\frac{1}{R_{1}} - \frac{1}{R_{2}})$

For no dispersion $d (\frac{1}{f}) = 0$

$d [(μ - 1) (\frac{1}{R_{1}} - \frac{1}{R_{2}})] = 0 \Rightarrow R_{1} = R_{2}$

Stream:JEESubject:PhysicsTopic:Geometrical OpticsSubtopic:Dispersion

⏱ 2mℹ️ Source: PYQ_2020

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