NEET · Physics · STD 12 - 10. Wave optics
After passing through a polariser a linearly polarised light of intensity \(I\) is incident on an analyser making an angle of \(30^{\circ}\) with that of the polariser. The intensity of light emitted from the analyser will be
- A \(\frac{I}{2}\)
- B \(\frac{ I }{3}\)
- C \(\frac{3 I}{4}\)
- D \(\frac{2 I}{3}\)
Answer & Solution
Correct Answer
(C) \(\frac{3 I}{4}\)
Step-by-step Solution
Detailed explanation
According to Malus law \(I_2=I_1 \cos ^2 \theta\)
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
- A photon and an electron (mass \(m\) ) have the same energy \(E\). The ratio ( \(\lambda_{\text {photon }} / \lambda_{\text {electron }}\) ) of their de Broglie wavelengths is: ( c is the speed of light)NEET 2025 Easy
- An electric dipole is placed as shown in the figure.The electric potential (in \(10^2\,V\) ) at point \(P\) due to the dipole is \(\left(\epsilon_0=\right.\) permittivity of free space and \(\left.\frac{1}{4 \pi \epsilon_0}=K\right)\) :
NEET 2023 Medium - A double convex lens has focal length \(25\; \mathrm{cm}\). The radius of curvature of one of the surfaces is double of the other. Find the radii If the refractive index of the material of the lens is \(1.5 \)NEET 2019 Medium
- Polar molecules are the molecules:NEET 2021 Easy
- For a transparent medium relative permeablity and permittlivity, \(\mu_{\mathrm{r}}\) and \(\epsilon_{\mathrm{r}}\) are \(1.0\) and \(1.44\) respectively. The velocity of light in this medium would be,NEET 2019 Medium
- Photons with energy \(5\,\, eV\) are incident on a cathode \(C\) in a photoelectric cell. The maximum energy of emitted photoelectrons is \(2\,\, e V.\) When photons of energy \(6\,\, eV\) are incident on \(C,\) no photoelectrons will reach the anode \(A,\) if the stopping potential of \(A\) relative to \(C\) is ............ \(V\)NEET 2016 Medium
More PYQs from NEET
- In bryophytes, the gemmae help in which one of the following?NEET 2025 Easy
- A long straight wire of radius \(a\) carries a steady current \(I.\) The current is uniformly distributed over its cross-section. The ratio of the magnetic fields \(B\) and \(B',\) at radial distances \(\frac{a}{2}\) and \(2a\) respectively, from the axis of the wire isNEET 2016 Medium
- A student performs an experiment of measuring the thickness of a slab with a vernier calliper whose \(50\) divisions of the vernier scale are equal to \(49\) divisions of the main scale. He noted that zero of the vernier scale is between \(7.00\; cm\) and \(7.05 \;cm\) mark of the main scale and \(23^rd\) division of the vernier scale exactly coincides with the main scale. The measured value of the thickness of the given slab using the calliper will beNEET 2017 Medium
- Which of the following immunoglobulins does constitute the largest percentage in human milk ?NEET 2015 Medium
- Given below are half cell reactions: \(MnO _{4}^{-}+8 H ^{+}+5 e ^{-} \rightarrow Mn ^{2+}+4 H _{2} O\), \(E^{o} _{ Mn ^{2+} / MnO _{4}^{-}}=-1.510 \,V\) \(\frac{1}{2} O _{2}+2 H ^{+}+2 e ^{-} \rightarrow H _{2} O\), \(E _{ O _{2} / H _{2} O }^{o}=+1.223 \,V\) Will the permanganate ion, \(MnO _{4}^{-}\)liberate \(O _{2}\) from water in the presence of an acid ?NEET 2022 Medium
- What is the fate of a piece of \(DNA\) carrying only gene of interest which is transferred into an alien organism? \(A\). The piece of \(DNA\) would be able to multiply itself independently in the progeny cells of the organism. \(B\). It may get integrated into the genome of the recipient. \(C\). It may multiply and be inherited along with the host \(DNA\). \(D\). The alien piece of DNA is not an integral part of chromosome. \(E\). It shows ability to replicate. Choose the correct answer from the options given below:NEET 2024 Medium