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Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

A person can see clearly object only when they lie between $50 cm$ to $400 cm$ from his eyes. In order to increase the maximum distance of distinct vision to infinity, the type and power of the correcting lens, the person has to use, will be

Options:

Answer:

Solution:

The maximum distance of distinct vision = $400 cm$ . So the image of the object at infinity is to be formed at $400 cm$ .

Use lens formula

$\frac{1}{v} - \frac{1}{u} = \frac{1}{f}$

$\frac{1}{- 400} - \frac{1}{\infty} = \frac{1}{f}$

$P = - 0.25 D$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Geometrical OpticsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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