Physics - Geometrical Optics Question with Solution | TestHub

PhysicsGeometrical OpticsRefraction at curved surface/LensMedium2 minQB

PhysicsMediummultiple choice

. An image of a bright square is obtained on a screen with the aid of a convergent lens. The distance between the square and the lens is 40 cm. The area of the image is nine times larger than that of the square. Select the correct statement(s)

Options:(select one or more)

Answer:

A, C

Solution:

$m^{2} = 9 \Rightarrow m = - 3 = \frac{v}{u} = \frac{v}{- 40} \Rightarrow v = 120 cm$

$\frac{1}{f} = \frac{1}{v} - \frac{1}{u} = \frac{1}{120} + \frac{1}{40} \Rightarrow f = 30 cm$

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

⏱ 2mℹ️ Source: QB

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