Ray Optics · JEE Advanced previous year questions

2023 4 questions

1. Q192023 · 4 Jun 2023 · Paper 1· One or more correct
   
   1. A.The blue light is polarized in the plane of incidence.
   2. B.The angle of the prism is $45^{\circ }$.
   3. C.The refractive index of the material of the prism for red light is $\sqrt{2}$.
   4. D.The angle of refraction for blue light in air at the exit plane of the prism is $60^{\circ }$.
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   Answer: A, C, D

2. Q262023 · 4 Jun 2023 · Paper 1· Numerical answer
   
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   Answer: 80 or 150 or 220

3. Q272023 · 4 Jun 2023 · Paper 1· Numerical answer

   In an experiment for determination of the focal length of a thin convex lens, the distance of the object from the lens is $10\pm 0.1\mathrm{cm}$ and the distance of its real image from the lens is $20\pm 0.2\mathrm{cm}$. The error in the determination of focal length of the lens is $n\%$. The value of $n$ is ____.

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   Answer: 1

4. Q222023 · 4 Jun 2023 · Paper 2· One or more correct
   
   1. A.It will deflect up by an angle ${\tan }^{-1}\left[\frac{(n_2^2-n_1^2)d}{2h}\right]$.
   2. B.It will deflect up by an angle ${\tan }^{-1}\left[\frac{(n_2-n_1)d}{h}\right]$.
   3. C.It will not deflect.
   4. D.The deflection angle depends only on $(n_2-n_1)$ and not on the individual values of $n_1$ and $n_2$.
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   Answer: B, D