MCQ practice · SSC Physics Board questions · Chapter 1: Physical Quantities and Their Measurements
Which scientist announced the existence of antimatter using the quantum theory together with the theory of relativity?
Think it through first, then pick an option.
- a Maxwell
- b Dirac
- c Einstein
- d Planck
Answer and explanation
Correct answer: b Dirac
Using the quantum theory together with the theory of relativity, Dirac announced the anti-particle in 1931.
Why the other options are wrong
- a Maxwell: Not Maxwell; joining the quantum theory with relativity, Dirac announced the anti-particle in 1931.
- c Einstein: Einstein gave the theory of relativity in 1905; it was Dirac who joined it with the quantum theory to announce the anti-particle.
- d Planck: Planck discovered the quantum theory in 1900; the anti-particle was announced by Dirac.
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