Physics · JEE

Medium Refraction of light at plane and spherical surfaces, thin lens formula and lens maker formula MCQs for JEE

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Q1PhysicsUnit 16: Optics
The distance between an electric lamp and a screen is d=1d=1 m. A convergent lens of focal length f=21cm\boldsymbol{f}=21 \mathrm{cm} is placed between the lamp and the lens such that a sharp image of the lamp filaments is formed on the screen. This question has multiple correct options
Q2PhysicsUnit 16: Optics
A student focussed the image of a candle flame on a white screen using a convex lens. He noted down the position of the candle screen and the lens as under: Position of candle =12.0cm=12.0 \mathrm{cm} Position of convex lens =50.0cm=\mathbf{5 0 . 0} \mathrm{cm} Position of the screen =88.0cm=88.0 \mathrm{cm} What will be the nature of the image formed if he further shifts the candle towards the lens?
Q3PhysicsUnit 16: Optics
Astigmatism for a human eye can be removed by using an additional:
Q4PhysicsUnit 16: Optics
An object is placed at 40cm40 \mathrm{cm} from the optic centre of a convex lens on its principal axis. if the focal length of the lens is 24cm24 \mathrm{cm}, find how far from the lens the screen should be placed to obtain a well-defined image.
Q5PhysicsUnit 16: Optics
White light is incident normally on a glass slab. Inside the glass slab,
Q6PhysicsUnit 16: Optics
Three lenses in contact have a combined focal length of 12cm12 \mathrm{cm}. When the third lens is removed the combined focal length becomes 60cm60 \mathrm{cm}. The third lens is :
Q7PhysicsUnit 16: Optics
The term refraction of light is best described by:
Q8PhysicsUnit 16: Optics
A diverging meniscus lens of 1.5 refractive index has concave surface of radii 3 and 4 cm.The position of the image, if an object is placed 12cm12 \mathrm{cm} in front of the lens, is

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