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Lenses Questions

Practice 19 Lenses questions with detailed answers and explanations. Free MCQs, PYQs, and mock test questions for NEET, JEE, GATE, SSC and more.

๐Ÿ“š
19
Total Questions
๐ŸŸข
4
Easy
๐ŸŸก
9
Medium
๐Ÿ”ด
6
Hard
Practice by Exam:Physics(18)PHYSICS(1)

About Lenses โ€” practice questions, PYQs & concepts

Lenses is a frequently-tested topic on Physics, PHYSICS. ExamTest.live currently lists 19 Lenses questions spanning previous-year papers from 2026 to 2026, each with worked solutions and a step-by-step explanation. Use the filters on this page to focus on a specific exam, difficulty level or year โ€” every answer key is free, no sign-up required.

Lenses weight in competitive exams

Across our Lenses question bank, the largest sources are Physics (18) and PHYSICS (1). Click any exam chip above to drill down to that exam-specific question set.

How to use this page

  • Start easy: 4 easy Lenses questions are available โ€” build fluency before moving up.
  • Target weak years: Use the year filter to focus on the most recent 2026 paper or older PYQs you have not attempted.
  • Time yourself: Every question shows the average solve time so you can benchmark your speed against other students.
  • Read every explanation: Even on questions you got right โ€” the explanation often surfaces a faster approach you can reuse.

All Lenses Questions(1โ€“19 of 19)

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Q1hardmcqPhysicsAIEEE 20042026
0% accuracy
A plano-convex lens of refractive index and radius of curvature is silvered at the curved surface. At what distance from this lens should an object be placed in order to have a real image of the same size as the object?
Q2mediummcqPhysicsAIEEE 20072026
0% accuracy
Two lenses of power and are in contact with each other. The focal length of the combination is:
Q3hardmcqPhysicsNEET 20192026
0% accuracy
Two similar thin equi-convex lenses, of focal length each, are kept coaxially in contact with each other such that the focal length of the combination is . When the space between the two lenses is filled with glycerin (which has the same refractive index () as that of glass) then the equivalent focal length is . The ratio will be:
Q4mediummcqPhysicsJEE Main2026
Diameter of plano-convex lens is and thickness at the centre is . If speed of light in material of lens is , the focal length of the lens is:
Q5easymcqPhysicsNEET 20232026
Two thin lenses are of same focal lengths (), but one is convex and the other one is concave. When they are placed in contact with each other, the equivalent focal length of the combination will be:
Q6hardmcqPhysicsNEET 20232026
In the figure shown here, what is the equivalent focal length of the combination of lenses? (Assume all layers are thin, , outer lenses , inner lens )
image
Q7mediummcqPhysicsNEET 20222026
A biconvex lens has radii of curvature, each. If the refractive index of the material of the lens is , the power of the lens is:
Q8hardmcqPhysicsNEET 20212026
A point object is placed at a distance of from a convex lens of focal length . If a plane mirror were put perpendicular to the principal axis of the lens and at a distance of from it, the final image would be formed at a distance of:
image
Q9mediummcqPhysicsNEET 20212026
A convex lens โ€˜Aโ€™ of focal length and a concave lens โ€˜Bโ€™ of focal length are kept along the same axis with a distance โ€˜ โ€™ between them. If a parallel beam of light falling on โ€˜Aโ€™ leaves โ€˜Bโ€™ as a parallel beam, then the distance โ€˜ โ€™ in cm will be:
Q10easymcqPHYSICSNEET 20192026
A biconvex lens has power . It is cut into two symmetrical halves by a plane containing the principal axis. The power of one part will be:
Q11mediummcqPhysicsPhysics
3% accuracy
In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination and the total magnification in comparison to the power () and magnification () for each lens will be, respectively:
Q12mediummcqPhysicsPhysics
0% accuracy
A biconvex lens has a radius of curvature of magnitude . Which one of the following options describes best the image formed of an object of height placed from the lens? (Assume refractive index )
Q13hardmcqPhysicsPhysics
Two identical glass () equiconvex lenses of focal length each are kept in contact. The space between the two lenses is filled with water (). The focal length of the combination is:
Q14mediummcqPhysicsPhysics
A plano-convex lens () fits exactly into a plano-concave lens (). Their plane surfaces are parallel. Focal length of the combination is:
Q15easymcqPhysicsPhysics
When a biconvex lens of glass having refractive index is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have refractive index:
Q16mediummcqPhysicsPhysics
A converging beam of rays incident on a diverging lens intersects at on the opposite side. If the lens is removed, they meet closer. The focal length is:
Q17mediummcqPhysicsPhysics
A lens having focal length and aperture of diameter forms an image of intensity . Aperture of diameter in central region of lens is covered by a black paper. Focal length of lens and intensity of image now will be respectively:
Q18hardmcqPhysicsPhysics
A boy is trying to start a fire by focusing Sunlight on a piece of paper using an equiconvex lens of focal length . The diameter of the Sun is and its mean distance from the earth is . What is the diameter of the Sun's image on the paper?
Q19easymcqPhysicsPhysics
Two thin lenses of focal lengths and are in contact and coaxial. The power of the combination is:

Frequently Asked Questions

How many Lenses questions are on ExamTest.live?โ–ผ
We have 19 Lenses questions spread across 1 pages, covering easy, medium, and hard difficulty levels with detailed explanations.
Are Lenses MCQs free?โ–ผ
Yes. All Lenses questions, answers, and explanations on ExamTest.live are completely free. No account or subscription required.
Which exams include Lenses questions?โ–ผ
Lenses questions are commonly asked in Physics, PHYSICS. You can filter by exam using the links above.
How do I practice Lenses questions effectively?โ–ผ
Start with easy questions to build confidence, then tackle medium and hard ones. Use the filter buttons to sort by difficulty. Reveal the answer only after attempting each question, and read the explanation thoroughly.