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Refraction of light at plane and spherical surfaces, thin lens formula and lens maker formula Short Tricks for JEE

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Short tricks for Refraction of light at plane and spherical surfaces, thin lens formula and lens maker formula work only with strong fundamentals. Apply the tips below in timed sets and review every explanation.

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  • Refraction of light at plane and spherical surfaces, thin lens formula and lens maker formula focus drill

    Solve 15 mixed MCQs for Refraction of light at plane and spherical surfaces, thin lens formula and lens maker formula, review every explanation, and note formulas you hesitated on.

  • Dimensional check first

    Before solving, verify each term has consistent SI dimensions — eliminates wrong options quickly in JEE MCQs.

  • Limiting cases

    Substitute extreme values (t→0, m→∞, θ→0) to sanity-check your final expression.

Syllabus context

Part of Optics in JEE Main Physics.

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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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