KCET · Physics · Wave Optics
An unpolarised beam of intensity \(\mathrm{I}_{0}\) falls on a polaroid. The intensity of the emergent light is
- A \(\frac{\mathrm{I}_{0}}{2}\)
- B \(\mathrm{I}_{0}\)
- C \(\frac{I_{0}}{4}\)
- D Zero
Answer & Solution
Correct Answer
(A) \(\frac{\mathrm{I}_{0}}{2}\)
Step-by-step Solution
Detailed explanation
If an unpolarised light is converted into plane polarised light by passing through a polaroid its intensity becomes half.
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
- The charges \(+q\) and \(+q\) are placed at the vertices of an equilateral triangle of side If the net electrostatic potential energy of the system is zero, then is equal toKCET 2008 Easy
- A Carnot's engine operates with source at \(127^{\circ} \mathrm{C}\) and sink at \(27^{\circ} \mathrm{C}\). If the source supplies \(40 \mathrm{~kJ}\) of heat energy, the work done by the engine isKCET 2007 Easy
- A mass of \( 1 \mathrm{Kg} \) carrying a charge of \( 2 \mathrm{C} \) is accelerated through a potential of \( 1 \mathrm{~V} \). The velocity acquired by it isKCET 2018 Medium
- The amount of energy released when one microgram of matter is annihilated isKCET 2009 Easy
- The range of electrical conductivity \((\sigma)\) and resistivity \((\rho)\) for metals, among the following, isKCET 2025 Easy
- Electric field at a distance \(r\) from an infinitely long uniformly charged straight conductor, having linear charge density \(\lambda\) is \(E_1\). Another uniformly charged conductor having same linear charge density \(\lambda\) is bent. into a semicircle of radius \(r\). The electric field at its centre is \(E_2\). ThenKCET 2023 Easy
More PYQs from KCET
- With respect to phenylketonuria identify which statement is not correct.KCET 2015 Easy
- Two wires A and B are made of same material. Their diameters are in the ratio of \(1: 2\) and lengths are in the ratio of \(1: 3\). If they are stretched by the same force, then increase in their lengths will be in the ratio ofKCET 2025 Medium
- The function \(f(x)=\log (1+x)-\frac{2 x}{2+x}\) is increasing onKCET 2022 Medium
- Dalton's law of partial pressure is applicable to which one of the following systems?KCET 2007 Easy
- A spherical shell of radius \( 10 \mathrm{~cm} \) is carrying a charge \( \mathrm{q} \). If the electric potential at distances \( 5 \) \( \mathrm{cm}, 10 \mathrm{~cm} \) and \( 15 \mathrm{~cm} \) from the centre of the spherical shell is \( V_{1}, V_{2} \) and \( V_{3} \) respectively, thenKCET 2015 Medium
- If \(A\) and \(B\) are matrices of order 3 and \(|A|=5,|B|=3\), then \(|3 A B|\) isKCET 2021 Easy