Identify which type of electromagnetic wave is produced using Klystron or Magnetron valve:
Gamma rays
Microwave
Infrared rays
Ultraviolet rays
X-rays
The Correct Option is B
Approach Solution - 1
Device characteristics:
Klystrons and magnetrons are specialized vacuum tubes
Designed to generate and amplify high-frequency electromagnetic waves
Operate in the microwave frequency range (typically 1-300 GHz)
Key applications:
- Used in radar systems
- Essential for microwave ovens
- Employed in satellite communications
Wave production mechanism:
- Klystrons use velocity modulation of electron beams
- Magnetrons utilize crossed electric and magnetic fields
- Both produce coherent microwave radiation
Thus, the correct option is (B): Microwave.
Approach Solution -2
Klystrons and Magnetrons are vacuum tubes specifically designed to generate microwaves. They operate using the interaction of an electron beam with resonant cavities within the tube.
Gamma rays are produced by nuclear transitions. Infrared rays are produced by thermal vibrations of atoms and molecules.
Ultraviolet rays are produced by high-energy electron transitions in atoms.
X-rays are produced by bombarding a metal target with high-energy electrons.
Thus, the correct option is (B): Gamma rays
Top Questions on Electromagnetic waves
- Three charges $+2q$, $+3q$ and $-4q$ are situated at $(0,-3a)$, $(2a,0)$ and $(-2a,0)$ respectively in the $x$-$y$ plane. The resultant dipole moment about origin is ___.
- JEE Main - 2026
- Physics
- Electromagnetic waves
- The magnetic field in a plane electromagnetic wave travelling in glass (\( n = 1.5 \)) is given by \[ B_y = (2 \times 10^{-7} \text{ T}) \sin(\alpha x + 1.5 \times 10^{11} t) \] where \( x \) is in metres and \( t \) is in seconds. The value of \( \alpha \) is:
- CBSE CLASS XII - 2026
- Physics
- Electromagnetic waves
- The electric field of an electromagnetic wave travelling through a medium is given by \[ \vec{E}(x,t)=25\sin(2\times10^{15}t-10^{7}x)\,\hat{n}. \] Then the refractive index of the medium is ________. (All given measurements are in SI units)
- JEE Main - 2026
- Physics
- Electromagnetic waves
Match the LIST-I with LIST-II:
List-I List-II A. Radio-wave I. is produced by Magnetron valve B. Micro-wave II. due to change in the vibrational modes of atoms C. Infrared-wave III. due to inner shell electrons moving from higher energy level to lower energy level D. X-ray IV. due to rapid acceleration of electrons Choose the correct answer from the options given below:
- JEE Main - 2026
- Physics
- Electromagnetic waves
- The ratio of speeds of electromagnetic waves in vacuum and a medium, having dielectric constant k = 3 and permeability of $\mu = 2\mu_0$, is ($\mu_0$ = permeability of vacuum)
- JEE Main - 2026
- Physics
- Electromagnetic waves
Questions Asked in KEAM exam
- Which among the following has the highest molar elevation constant?
- KEAM - 2025
- Colligative Properties
- The formula of Ammonium phosphomolybdate is
- KEAM - 2025
- coordination compounds
- Which is a Lewis acid?
- KEAM - 2025
- Acids and Bases
- Hardness of water is estimated by titration with
- KEAM - 2025
- Solutions
- Which of the following gases has the lowest solubility in water at 298 K?
- KEAM - 2025
- Solutions
Concepts Used:
Radiation
Radiation is the energy or particles from a source that travels from one media to other. It travels through a medium after its emission from a source and is absorbed by matter.
Forms of Radiation:
- Particle Radiation includes the alpha (α), beta (β), and neutron radiations.
- Gravitational Radiation includes the radiation that takes the form of gravitational waves or as ripples in the curvature of space-time.
- Acoustic Radiation includes ultrasound, seismic and sound waves.
- Electromagnetic Radiation is inclusive of radio waves, gamma radiation (γ), x-rays, and visible light.
Types of Radiation:
- Ionizing Radiation - It carries more than 10 eV, that is enough to ionize atoms and molecules and break chemical bonds.
- Non-ionizing Radiation – It consists of alpha particles, beta particles, and gamma particles, whereas ionizing radiation consists of microwave radiation, infrared radiation and radio waves.
Read More: Types of Radiation