Which theory did Albert Einstein develop?

Which theory did Albert Einstein develop?

• A. Quantum theory
• B. General theory of relativity
• C. Special theory of relativity
• D. Thermodynamics

Answer: (B)

Gravity isn’t a force pulling objects toward each other in the usual sense; it’s the result of spacetime bending under mass and energy. Einstein’s general theory of relativity captures this by saying that mass-energy tells spacetime how to curve, and that curved spacetime guides how objects move. The equivalence principle is a key idea here: locally, being in a gravitational field feels the same as being in an accelerating frame, which leads to predictions like light skimming past massive bodies and time running slower in stronger gravity. This theory extends the earlier ideas of special relativity, which deal with observers in uniform motion, to include gravity and accelerating reference frames. Other options point to different areas—quantum theory and thermodynamics—but the framework that specifically describes gravity through spacetime geometry is the general theory of relativity.

Gravity isn’t a force pulling objects toward each other in the usual sense; it’s the result of spacetime bending under mass and energy. Einstein’s general theory of relativity captures this by saying that mass-energy tells spacetime how to curve, and that curved spacetime guides how objects move. The equivalence principle is a key idea here: locally, being in a gravitational field feels the same as being in an accelerating frame, which leads to predictions like light skimming past massive bodies and time running slower in stronger gravity. This theory extends the earlier ideas of special relativity, which deal with observers in uniform motion, to include gravity and accelerating reference frames. Other options point to different areas—quantum theory and thermodynamics—but the framework that specifically describes gravity through spacetime geometry is the general theory of relativity.