Set 2: Central Ideas (Advanced)
Explanation
PASSAGE
The following text discusses Quantum Tunneling. Quantum tunneling is a quantum mechanical phenomenon where a particle tunnels through a barrier that it classically could not surmount because its total energy is lower than the potential energy of the barrier. In classical mechanics, the particle would bounce back. In quantum mechanics, the particle has a wave-like probability distribution that extends to the other side of the barrier, allowing a non-zero probability of it appearing there. This effect is crucial for nuclear fusion in stars.
What allows a particle to 'tunnel' through a barrier in quantum mechanics?
Detailed Explanation
Choice C is correct. The text explains: 'particle has a wave-like probability distribution that extends to the other side... allowing a non-zero probability of it appearing there.'
Key Evidence:
• "wave-like probability distribution"
• "extends to the other side"
Why others are wrong: A (Inaccurate), B (Inaccurate (classical view)), D (Inaccurate).