Which perceived shift occurs in gravitational lensing around a black hole?

💡 Explanation

Gravitational lensing causes distortion because curved spacetime acts like a lens, bending light paths according to Einstein's equivalence principle. Therefore, background objects appear warped rather than only redshifting; different paths experience differential delays.

• Which mechanism critically limits energy transfer efficiency in long-distance AC power transmission lines when capacitive reactance is significant?
• Within a tokamak reactor, which risk strongly increases when impurity ions enter the plasma core during deuterium-tritium fusion?
• Which outcome results when heat is added to an engine undergoing an irreversible thermodynamic cycle stage?
• Which consequence results when localized mass increases near an imaging telescope?
• Which outcome occurs when uranium isotopes reach criticality?
• Which outcome decreases a heat engine's efficiency if the high-temperature reservoir undergoes a phase change resulting in a decreasing temperature?