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Geometrical Optics question

2023 · Shift 2 · Q39
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  5. /2023 · Shift 2 · Q39

Geometrical Optics question

2023 · Shift 2 · Q39

JEE AdvancedPhysicsGeometrical OpticsMultiple correct+4 / −2
A monochromatic light wave is incident normally on a glass slab of thickness ddd, as shown in the figure. The refractive index of the slab increases linearly from n1n_1n1​ to n2n_2n2​ over the height hhh. Which of the following statement(s) is(are) true about the light wave emerging out of the slab? JEE Advanced 2023 Paper 2 Online Physics - Geometrical Optics Question 8 English
  1. A
    It will deflect up by an angle tan⁡−1[(n22−n12)d2h]\tan ^{-1}\left[\frac{\left(n_2^2-n_1^2\right) d}{2 h}\right]tan−1[2h(n22​−n12​)d​].
  2. B
    It will deflect up by an angle tan⁡−1[(n2−n1)dh]\tan ^{-1}\left[\frac{\left(n_2-n_1\right) d}{h}\right]tan−1[h(n2​−n1​)d​].
  3. C
    It will not deflect.
  4. D
    The deflection angle depends only on (n2−n1)\left(n_2-n_1\right)(n2​−n1​) and not on the individual values of n1n_1n1​ and n2n_2n2​.
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