Physics Dawn of Modern Physics ETEA 2022
PMDC Verified Question 32 of 52
In physics it is observed that when matter and anti-matter combine, they form:
A
Particles with zero charge
B
Particles with positive charge
C
Particles with negative charge
D
Particles with dual mass
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Particles with zero charge
Concept:

Matter and antimatter pairs (like an electron and positron) possess exactly opposite quantum numbers, notably electrical charge.

Formula:

$$ e^- + e^+ \rightarrow \gamma + \gamma $$

Solution:

  • When they collide and annihilate, the net charge of the system is \( -1 + 1 = 0 \).


  • By the law of conservation of charge, the resulting particles must also have a total net charge of zero.


  • The annihilation produces high-energy gamma-ray photons, which are fundamental particles carrying precisely zero electrical charge.


Why other options are incorrect:

Forming charged particles would violate the fundamental law of charge conservation. "Dual mass" is a fictional physical concept.

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