Anti matter theory was proposed by
Correct answer: C. Dirac
- A. Einstein
- B. Bohr
- C. Dirac
- D. Planck
Explanation
Paul Dirac, a British physicist, proposed the existence of antimatter in 1928. He was working on a relativistic equation for the electron, and his solution predicted the existence of a particle with the same mass as the electron but with an opposite charge. This particle was later discovered and named the positron.Dirac's theory revolutionized our understanding of matter and antimatter, and it laid the foundation for the development of particle physics.
Last updated
About Dawn of Modern Physics
Classical physics cannot explain blackbody radiation and related observations, leading to Planck’s quantum theory, in which energy is emitted or absorbed in discrete packets. Photons provide the particle model of light, with energy and momentum linked to frequency and wavelength, including the photoelectric effect and its threshold frequency.
Practise Dawn of Modern Physics
739 free Dawn of Modern Physics MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
1.5 mW of 400 nm light is directed at a photoelectric cell. If 0.1% of the incident photons produce photoelectrons, the current in the cell is:
1.5 mW of 400 nm light is directed at a photoelectric cell. If 0.1% of the incident photons produce photoelectrons, the current in the cell is:
A 5 watt LED bulb converts 80% of the power into light photons wavelength 660 nm. What is the number of photons emitted from the bulb in one second.
A black body is considered ideal when it:
A body at temperature T radiates heat according to relation: