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Ray Optics

JEE Main level, numerical answer, medium

223 of 295

Question 223 of 295

An object is placed at a distance of $12cm$ from a convex lens. A convex mirror of focal length $15cm$ is placed on another side of the lens at $8cm$ as shown in the figure. The image of the object coincides with the object.

When the convex mirror is removed, a real and inverted image is formed at a position. The distance of the image from the object will be $___cm$

Show answer and solution

Answer: 50

For the object to coincide with the image, the light must fall perpendicularly to the mirror. This means that the light will have to converge at

C

of the mirror. Without the mirror also, the light would coverage at

C

. So the distance is:

=12+8+30=50cm

JEE Main question paper PDF

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JEE Main 2025 Apr 2 Shift 1 question paper

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More Physics practice

JEE Main Physics practice question on Ray Optics (Combination of Lens and Mirrors), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.