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JEE Main 2025 (29 Jan, Shift 1) · Spherical Surfaces & Thin Lenses

Spherical Surfaces & Thin Lenses question from JEE Main 2025 (29 Jan, Shift 1)

Q34JEE Main 2025 · 29 JAN · SHIFT 1Medium

Spherical Surfaces & Thin Lenses

Let u and v be the distances of the object and the image from a lens of focal length f. The correct graphical representation of u and v for a convex lens when |u| > f, is

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Answer: (d)

  1. For a convex lens with ∣u∣>f|u| > f: v=∣u∣f∣u∣−fv = \frac{|u| f}{|u| - f} (real image).
  2. As ∣u∣→f|u| \to f, v→∞v \to \infty (curve rises along the dashed line ∣u∣=f|u| = f).
  3. As ∣u∣→∞|u| \to \infty, v→fv \to f (curve flattens out).
  4. So the answer is (d).
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