Concept:Elementary modern physics deals with ideas beyond ordinary classical physics, especially at atomic, subatomic, and high-speed scales.
Explanation:Classical mechanics explains the motion of everyday, large objects using Newton’s laws.
It belongs to classical physics, not to elementary modern physics.
Quantum mechanics, special relativity, and nuclear physics all fall under modern physics.
Quantum mechanics deals with atomic and subatomic particle behaviour.
Special relativity handles motion at speeds close to the speed of light.
Nuclear physics covers the atomic nucleus, radioactivity, and nuclear reactions.
So the one that is NOT an example of elementary modern physics is classical mechanics.
Answer:A. Classical mechanics