JEE Mains · Physics · STD 12 - 8. Electromagnetic waves
Match the List-I with List-II
| List-I | List-II | ||
| A | Radio-wave | I | is produced by Magnetron value |
| B | Micro-wave | II | Due to change in the vibrational modes of atoms |
| C | Infrared-wave | II | Due to inner shell electrons moving from higher energy level to lower energy level |
| D | X-ray | IV | Due to rapid acceleration of electrons |
- A A-II, B-IV, C-III, D-I
- B A-IV, B-III, C-I, D-II
- C A-IV, B-I, C-II, D-III
- D A-IV, B-II, C-I, D-III
Answer & Solution
Correct Answer
(C) A-IV, B-I, C-II, D-III
Step-by-step Solution
Detailed explanation
Radio wave ⇒ Produced by rapid acceleration of electrons Micro wave ⇒ By magnetron valve Infrared wave ⇒ Change in vibrational modes \(X\) ray ⇒ Transition of inner shell electrons from high energy level to low energy level. A - IV, B - I, C - II, D - III
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 monochromatic light of wavelength \(6000\)A is incident on the single slit of width \(0.01 \mathrm{~mm}\). If the diffraction pattern is formed at the focus of the convex lens of focal length \(20 \mathrm{~cm}\), the linear width of the central maximum is _______.JEE Mains 2024 Hard
- A capacitor with capacitance \(5\,\mu F\) is charged to \(5\,\mu C.\) If the plates are pulled apart to reduce the capacitance to \(2\,\mu F,\) how much work is done?JEE Mains 2019 Medium
- A cylindrical vessel containing a liquid is rotated about its axis so that the liquid rises at its sides as shown in the figure. The radius of vessel is \(5\, cm\) and the angular speed of rotation is \(\omega\; rad \,s^{-1}\). The difference in the height, \(h(\) in \(cm )\) of liquid at the centre of vessel and at the side will be
JEE Mains 2020 Hard - If \({q}_{{f}}\) is the free charge on the capacitor plates and \({q}_{{b}}\) is the bound charge on the dielectric slab of dielectric constant \(k\) placed between the capacitor plates, then bound charge \(q_{b}\) can be expressed asJEE Mains 2021 Hard
- A parallel plate capacitor is formed by two plates each of area \(30 \pi\, cm ^{2}\) separated by \(1\, mm\). A material of dielectric strength \(3.6 \times 10^{7} \,Vm ^{-1}\) is filled between the plates. If the maximum charge that can be stored on the capacitor without causing any dielectric breakdown is \(7 \times 10^{-6}\, C\), the value of dielectric constant of the material is \(\left\{ Use : \frac{1}{4 \pi \varepsilon_{0}}=9 \times 10^{9} Nm ^{2} C ^{-2}\right\}\)JEE Mains 2022 Medium
- A uniformly charged ring of radius \(3a\) and total charge \(q\) is placed in \(xy-\) plane centered at origin. A point charge \(q\) is moving towards the ring along the \(z-\) axis and has speed \(v\) at \(z = 4a\). The minimum value of \(v\) such that it crosses the origin isJEE Mains 2019 Hard
More PYQs from JEE Mains
- A \(2\,meter\) long scale with least count of \(0.2\,cm\) is used to measure the locations of objects on an optical bench. While measuring the focal length of a convex lens, the object pin and the convex lens are placed at \(80\,cm\) mark and \(1\,m\) mark, respectively. The image of the object pin on the other side of lens coincides with image pin that is kept at \(180\,cm\) mark. The \(\%\) error in the estimation of focal length isJEE Mains 2023 Hard
- For three vectors \(\vec{A}=(-x \hat{i}-6 \hat{j}-2 \hat{k})\), \(\vec{B}=(-\hat{i}+4 \hat{j}+3 \hat{k})\) and \(\vec{C}=(-8 \hat{i}-\hat{j}+3 \hat{k})\), if \(\overrightarrow{\mathrm{A}} \cdot(\overrightarrow{\mathrm{B}} \times \overrightarrow{\mathrm{C}})=0\), them value of \(\mathrm{x}\) is _______.JEE Mains 2024 Hard
- If \(\alpha, \beta\) are the distinct roots of \(x^{2}+b x+c=0\) then \(\lim _{x \rightarrow \beta} \frac{e^{2\left(x^{2}+b x+c\right)}-1-2\left(x^{2}+b x+c\right)}{(x-\beta)^{2}}\) is equal to:JEE Mains 2021 Hard
- Which one of the following is the correct dimensional formula for the capacitance in F ? \(\mathrm{M}, \mathrm{L}, \mathrm{T}\) and C stand for unit of mass, length, time and charge,JEE Mains 2025 Easy
- A seven digit number is formed using digits \(3 ,3,4,4,4,5,5 .\) The probability, that number so formed is divisible by \(2,\) is ..... .JEE Mains 2021 Hard
- A particle is moving in a circle of radius \(r\) under the action of a force \(F\, = \alpha r^2\) which is directed towards centre of the circle. Total mechanical energy (kinetic energy + potential energy) of the particle is (take potential energy \(= 0\) for \(r\, = 0\))JEE Mains 2015 Hard