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
If AB is incident plane wave front, then refracted wave front is (n\(_1\) → n\(_2\))
- KCET - 2025
- Physics
- Electromagnetic waves
- A series LCR circuit containing an AC source of 100V has an inductor and a capacitor of reactances 24\(\Omega\) and 16\(\Omega\) respectively. If a resistance of 6\(\Omega\) is connected in series, then the potential difference across the series combination of inductor and capacitor will be
- KCET - 2025
- Physics
- Electromagnetic waves
- A plane electromagnetic wave of frequency 20 MHz travels in free space along the +x direction. At a particular point in space and time, the electric field vector of the wave is \( E_y = 9.3 \, \text{V/m} \). Then, the magnetic field vector of the wave at that point is:
- JEE Main - 2025
- Physics
- Electromagnetic waves
- Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): Electromagnetic waves carry energy but not momentum.
Reason (R): Mass of a photon is zero. In the light of the above statements, choose the most appropriate answer from the options given below:- JEE Main - 2025
- Physics
- Electromagnetic waves
- A plane electromagnetic wave propagates along the \( +x \) direction in free space. The components of the electric field \( \vec{E} \) and magnetic field \( \vec{B} \) vectors associated with the wave in Cartesian frame are:
- JEE Main - 2025
- Physics
- Electromagnetic waves
Questions Asked in KEAM exam
- If \( \tan \left( \frac{\pi}{12} + 2x \right) = \cot 3x \), where \( 0<x<\frac{\pi}{2} \), then the value of \( x \) is:
- KEAM - 2024
- Integration
If \( 2 \) is a solution of the inequality \( \frac{x-a}{a-2x}<-3 \), then \( a \) must lie in the interval:
- KEAM - 2024
- Magnitude and Directions of a Vector
- The centre of a square is at the origin of the complex plane. If one of the vertices is at \( -3i \), then the area of the square is:
- KEAM - 2024
- Magnitude and Directions of a Vector
- Number of integers greater than 7000 can be formed using the digits 2, 4, 5, 7, 8 is (Repetition of digits is not allowed):
- KEAM - 2024
- Magnitude and Directions of a Vector
- What is the quantity of current required to liberate 16g of O\(_2\) (g) during electrolysis of water? (Given 1F = 96500C)
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