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Geometrical Optics question

2025 · Shift 2 · Q38
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  5. /2025 · Shift 2 · Q38

Geometrical Optics question

2025 · Shift 2 · Q38

JEE AdvancedPhysicsGeometrical OpticsMultiple correct+4 / −2
Two identical concave mirrors each of focal length f are facing each other as shown in the schematic diagram. The focal length f is much larger than the size of the mirrors. A glass slab of thickness t and refractive index n_0 is kept equidistant from the mirrors and perpendicular to their common principal axis. A monochromatic point light source S is embedded at the center of the slab on the principal axis, as shown in the schematic diagram. For the image to be formed on S itself, which of the following distances between the two mirrors is/are correct: JEE Advanced 2025 Paper 2 Online Physics - Geometrical Optics Question 2 English
  1. A
    4f+(1−1n0)t4f + \left(1 - \frac{1}{n_0}\right)t4f+(1−n0​1​)t
  2. B
    2f+(1−1n0)t2f + \left(1 - \frac{1}{n_0}\right)t2f+(1−n0​1​)t
  3. C
    4f+(n0−1)t4f + (n_0 - 1)t4f+(n0​−1)t
  4. D
    2f+(n0−1)t2f + (n_0 - 1)t2f+(n0​−1)t
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