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Geometrical Optics question

2025 · 22 Jan · Shift 1 · Q54
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  5. /2025 · 22 Jan · Shift 1 · Q54

Geometrical Optics question

2025 · 22 Jan · Shift 1 · Q54

JEE MainPhysicsGeometrical OpticsMCQ+4 / −1
In the diagram given below, there are three lenses formed. Considering negligible thickness of each of them as compared to ∣R1∣\left|R_1\right|∣R1​∣ and ∣R2∣\left|R_2\right|∣R2​∣, i.e., the radii of curvature for upper and lower surfaces of the glass lens, the power of the combination is JEE Main 2025 (Online) 22nd January Morning Shift Physics - Geometrical Optics Question 34 English
  1. A
    −16(1∣R1∣−1∣R2∣)-\frac{1}{6}\left(\frac{1}{\left|\mathrm{R}_1\right|}-\frac{1}{\left|\mathrm{R}_2\right|}\right)−61​(∣R1​∣1​−∣R2​∣1​)
  2. B
    −16(1∣R1∣+1∣R2∣)-\frac{1}{6}\left(\frac{1}{\left|\mathrm{R}_1\right|}+\frac{1}{\left|\mathrm{R}_2\right|}\right)−61​(∣R1​∣1​+∣R2​∣1​)
  3. C
    16(1∣R1∣+1∣R2∣)\frac{1}{6}\left(\frac{1}{\left|\mathrm{R}_1\right|}+\frac{1}{\left|\mathrm{R}_2\right|}\right)61​(∣R1​∣1​+∣R2​∣1​)
  4. D
    16(1∣R1∣−1∣R2∣)\frac{1}{6}\left(\frac{1}{\left|\mathrm{R}_1\right|}-\frac{1}{\left|\mathrm{R}_2\right|}\right)61​(∣R1​∣1​−∣R2​∣1​)
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