Which outcome occurs when an electron's energy surpasses the work function of a metal surface in a vacuum tube?

💡 Explanation

Thermionic emission causes electrons to be ejected from the metal surface because the increased thermal energy allows the electrons to overcome the surface potential barrier; therefore, electrons are emitted from the metal, rather than being bound by it under thermionic emission.

• Which outcome occurs when a submarine's sonar array experiences thermal gradients?
• Which outcome occurs when exhaust flow bypasses a catalyst?
• Which outcome occurs when a Josephson junction ages?
• Which outcome occurs when accelerating an object to relativistic speeds, closely approaching *c*?
• Which outcome results when electron orbitals hybridize in carbon?
• Which effect worsens when intense gravitational curvature grows?