NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Electromagnetic Waves
NEET · Physics · Electromagnetic Waves
An electromagnetic wave is widely used in radar systems for...
An electromagnetic wave is widely used in radar systems for aircraft navigation due to its short wavelength. Which of the following is the primary source of production for this electromagnetic wave?
Options
- ARapid acceleration and deceleration of electrons in conducting wires
- BBombarding a metal target with high energy electrons
- CSpecial vacuum tubes like klystrons, magnetrons and Gunn diodes
- DVibration of atoms and molecules in hot bodies
Correct answer
C. Special vacuum tubes like klystrons, magnetrons and Gunn diodes
Step-by-step solution
The electromagnetic waves used in radar systems for aircraft navigation are microwaves.
Microwaves are produced by special vacuum tubes such as klystrons, magnetrons, and Gunn diodes.
Rapid acceleration of electrons in wires produces radio waves, bombarding a metal target with high energy electrons produces X-rays, and vibration of atoms in hot bodies produces infrared waves.
Answer: Special vacuum tubes like klystrons, magnetrons and Gunn diodes
Microwaves are produced by special vacuum tubes such as klystrons, magnetrons, and Gunn diodes.
Rapid acceleration of electrons in wires produces radio waves, bombarding a metal target with high energy electrons produces X-rays, and vibration of atoms in hot bodies produces infrared waves.
Answer: Special vacuum tubes like klystrons, magnetrons and Gunn diodes