JEE Main 2017PhysicsRay OpticsMediumMCQ

JEE Main 2017 — Ray Optics Question with Solution

JEE Main 2017 (02 Apr)

Question

A diverging lens with magnitude of focal length 25 cm is placed at a distance of 15 cm from a converging lens of magnitude of focal length 20 cm. A beam of parallel light falls on the diverging lens. The final image formed is:

Choose an option

Show full solutionCorrect option: B
Correct answer
BReal and at a distance of 40 cm from convergent lens

Step-by-step explanation



Diverging lens forms the image at its focus. The image formed by diverging lens is the object for converging lens.

∴ Distance of the object from converging lens is 40 cm i.e., object is at double focal point.

∴ Image forms at double focal point on the other side of the lens.
1v-14=1f
1v-1-40=120
1v+140=120
1v=120-140=140
v=40

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About this question

This is a previous-year question from JEE Main 2017, covering the Ray Optics chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.