JEE Mains · Physics · STD 12 - 10. Wave optics
When an unpolarized light falls at a particular angle on a glass plate (placed in air), it is observed that the reflected beam is linearly polarized. The angle of refracted beam with respect to the normal is ___________ .
\(\left(\tan ^{-1}(1.52)=57.7^{\circ}\right.\), refractive indices of air and glass are 1.00 and 1.52 , respectively)
- A 39.6\(^{\circ}\)
- B 32.3\(^{\circ}\)
- C 42.6\(^{\circ}\)
- D 36.3\(^{\circ}\)
Answer & Solution
Correct Answer
(B) 32.3\(^{\circ}\)
Step-by-step Solution
Detailed explanation
\(\tan i=\frac{\mu_2}{\mu_1}=\frac{\mu_{ g }}{\mu_{ a }}\) \(\tan i =1.52\) \(i =57.7^{\circ}\) \(r =90^{\circ}- i\) \(r =32.3^{\circ}\)
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from Physics
- Two radioactive substances \(A\) and \(B\) have decay constants \(5\lambda \) and \(\lambda \) respectively. At \(t = 0\), a sample has the same number of the two nuclei. The time taken for the ratio of the number of nuclei to become \((\frac {1}{e})^2\) will beJEE Mains 2019 Medium
- A circular disc of radius \(b\) has a hole of radius \(a\) at its centre (see figure). If the mass per unit area of the disc varies as \(\left( {\frac{{{\sigma _0}}}{r}} \right)\), then the radius of gyration of the disc about its axis passing through the centre is
JEE Mains 2019 Hard - What percentage of kinetic energy of a moving particle is transferred to a stationary particle when it strikes the stationary particle of \(5\) times its mass? (Assume the collision to be head-on elastic collision)JEE Mains 2022 Hard
- The potential energy of a particle changes with distance \(x\) from a fixed origin as \(V = \dfrac{A\sqrt{x}}{x + B}\), where \(A\) and \(B\) are constant with appropriate dimensions. The dimensions of \(AB\) are _______.JEE Mains 2026 Easy
- Match List\(-I\) with List\(-II\)
Question: Choose the correct answer from the options given belowList \(-I\) List \(-II\) \((A)\) Moment of inertia of solid sphere of radius \((R)\) about any tangent \((I)\) \(\frac{5}{3} MR ^{2}\) \((B)\) Moment of inertia of hollow sphere of radius \((R)\) about any tangent \((II)\) \(\frac{7}{5} MR ^{2}\) \((C)\) Moment of inertia of circular ring of radius \((R)\) about its diameter. \((III)\) \(\frac{1}{4} MR ^{2}\) \((D)\) Moment of inertia of circular disc of radius \((R)\) about any diameter. \((IV)\) \(\frac{1}{2} MR ^{2}\) JEE Mains 2022 Medium - A series \(LCR\) circuit is connected to an ac source of \(220\,V , 50 Hz\). The circuit contain a resistance \(R=100 \Omega\) and an inductor of inductive reactance \(X_L=79.6 \Omega\). The capacitance of the capacitor needed to maximize the average rate at which energy is supplied will be \(..........\mu F\).JEE Mains 2023 Medium
More PYQs from JEE Mains
- If the three distinct lines \(x + 2ay + a = 0, x + 3by+ b = 0\) and \(x + 4ay + a = 0\) are concurrent, then the point \((a, b)\) lies on aJEE Mains 2014 Hard
- Given below are two statements: One is labelled as Assertion \((A)\) and the other is labelled as Reason \((R).\) Assertion \((A)\) : In an uniform magnetic field, speed and energy remains the same for a moving charged particle. Reason \((R)\) : Moving charged particle experiences magnetic force perpendicular to its direction of motion.JEE Mains 2022 Medium
- Water drops are falling from a nozzle of a shower onto the floor, from a height of \(9.8\, {m}\). The drops fall at a regular interval of time. When the first drop strikes the floor, at that instant, the third drop begins to fall. Locate the position of second drop from the floor when the first drop strikes the floor. (In \(m\))JEE Mains 2021 Hard
- Let \(\vec{\alpha}=4 \hat{ i }+3 \hat{ j }+5 \hat{ k }\) and \(\vec{\beta}=\hat{ i }+2 \hat{ j }-4 \hat{ k }\). Let \(\vec{\beta}_1\) be parallel to \(\vec{\alpha}\) and \(\vec{\beta}_2\) be perpendicular to \(\vec{\alpha}\). If \(\vec{\beta}=\vec{\beta}_1+\vec{\beta}_2\), then the value of \(5 \vec{\beta}_2 \cdot(\hat{ i }+\hat{ j }+\hat{ k })\) isJEE Mains 2023 Hard
- A convex lens of focal length 30 cm is placed in contact with a concave lens of focal length 20 cm. An object is placed at 20 cm to the left of this lens system. The distance of the image from the lens in cm is ________JEE Mains 2025 Easy
- A vertical closed cylinder is separated into two parts by a frictionless piston of mass \(m\) and of negligible thickness. The piston is free to move along the length of the cylinder .The length of the cylinder above the piston is \(l_1,\) and that below the piston is \(l_2,\) such that \(l_1 > l_2.\) Each part of the cylinder contains \(n\) moles of an ideal gas at equal temperature \(T.\) If the piston is stationary, its mass, \(m,\) will be given by: ( \(R\) is universal gas constant and \(g\) is the acceleration due to gravity)JEE Mains 2019 Hard