NEET
- Exam
- NEET
- Subject
- Physics
- Chapter
- Electromagnetic Waves
NEET · Physics · Electromagnetic Waves
Which of the following statements regarding the production of...
Which of the following statements regarding the production of electromagnetic waves is incorrect?
Options
- AX-rays are produced by bombarding a metal target with high-speed electrons.
- BRadio waves are produced by the accelerated motion of charges in conducting wires.
- CMicrowaves are produced by the vibration of atoms and molecules in hot bodies.
- DGamma rays are produced during the radioactive decay of atomic nuclei.
Correct answer
C. Microwaves are produced by the vibration of atoms and molecules in hot bodies.
Step-by-step solution
Statement 1 is correct because X-rays are produced by the sudden deceleration of high-speed electrons when they strike a heavy metal target.
Statement 2 is correct because radio waves are generated by the accelerated or oscillating motion of charges in conducting wires.
Statement 4 is correct because gamma rays are of nuclear origin, produced during the radioactive decay of unstable nuclei.
Statement 3 is incorrect because microwaves are produced by special vacuum tubes such as klystron valves, magnetron valves, and Gunn diodes. It is infrared waves that are produced by hot bodies and the vibration of atoms and molecules.
Answer: Microwaves are produced by the vibration of atoms and molecules in hot bodies.
Statement 2 is correct because radio waves are generated by the accelerated or oscillating motion of charges in conducting wires.
Statement 4 is correct because gamma rays are of nuclear origin, produced during the radioactive decay of unstable nuclei.
Statement 3 is incorrect because microwaves are produced by special vacuum tubes such as klystron valves, magnetron valves, and Gunn diodes. It is infrared waves that are produced by hot bodies and the vibration of atoms and molecules.
Answer: Microwaves are produced by the vibration of atoms and molecules in hot bodies.