Exams › NEET › Physics

Which one of the following rays is not electromagnetic wave?

1. heat rays
2. X-rays
3. γ-rays
4. β-rays

Correct answer: β-rays

Solution

Beta (β) rays are streams of high-energy, high-speed electrons or positrons emitted during radioactive decay, and they are not part of the electromagnetic spectrum. The other options (heat rays, X-rays, and γ-rays) are electromagnetic waves.

Related NEET Physics questions

• Who named the negatively charged particles present in cathode rays as electrons?
• Name the high energetic invisible electromagnetic wave which helps in the study of structure of crystals.
• Which of the following type of radiations are radiated by on oscillating electric charge?
• Microwaves are detected by
• Threshold wavelength of tungsten is 2300 angstrom. If ultraviolet light of wavelength 1800 angstrom is incident on it, then the maximum kinetic energy of photoelectrons would be?
• Name the rays or waves of wavelength nearly \( 0.1 n m \)

⚔️ Practice NEET Physics free + battle 1v1 →