jee_main_2025_29_jan_morning - Ray Optics and Optical Instruments Topics

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QUESTION #0 Total Internal Reflection
At the interface between two materials having refractive indices n₁ and n₂ , the critical angle for reflection of an em wave is θ1C . The n₂ material is replaced by another material having refractive index n₃ , such that the critical angle at the interface between n₁ and n₃ materials is θ2C . If n₃ > n₂ > n₁ ; (n₂)/(n₃) = (2)/(5) and θ2C - θ1C = (1)/(2) , then θ1C is
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QUESTION #0 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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QUESTION #0 Refraction
Two light beams fall on a transparent material block at point 1 and 2 with angle θ₁ and θ₂ , respectively, as shown in figure. After refraction, the beams intersect at point 3 which is exactly on the interface at other end of the block. Given: the distance between 1 and 2, d = 4√(3) ~cm and θ₁ = θ₂ = ⁻¹( n₂2n₁) , where refractive index of the block n₂ > refractive index of the outside medium n₁ , then the thickness of the block is ______ cm. {{IMG1}}
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Rankbit System
JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)

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