A. Two
B. Three
C. Four
D. One
The correct answer to the question: "As a result of annihilation of electron and positron, number of γ–ray (Gama ray) photons are: ________?" is "Two ".
A. Two
B. Three
C. Four
D. One
The correct answer to the question: "As a result of annihilation of electron and positron, number of γ–ray (Gama ray) photons are: ________?" is "Two ".
