Learning Path
Question & Answer1
Understand Question2
Review Options3
Learn Explanation4
Explore TopicChoose the Best Answer
A
Time is experienced the same by all observers regardless of their motion.
B
The perception of time can vary depending on an observer's speed.
C
Events that are simultaneous for one observer may not be simultaneous for another.
D
Einstein's theory eliminated the concept of gravity in physics.
E
The theory has significant implications for technology and communication.
Understanding the Answer
Let's break down why this is correct
Answer
Einstein’s Theory of Relativity says that the speed of light is the same for all observers and that time and space are not fixed but change with motion. Because of this, fast‑moving clocks tick slower and moving objects look shorter, a fact known as time dilation and length contraction. The theory also shows that mass and energy are interchangeable, expressed by the famous equation E = mc². Finally, Einstein’s General Relativity explains gravity not as a force but as the bending of spacetime around mass. These ideas together replace the old idea of absolute time and space with a dynamic, interlinked universe.
Detailed Explanation
Both say that time depends on speed and that events that seem simultaneous can differ for observers. Other options are incorrect because It says time is the same for everyone; It claims Einstein removed gravity.
Key Concepts
Theory of Relativity
Perception of Time
Simultaneity
Topic
Einstein's Theory of Relativity
Difficulty
easy level question
Cognitive Level
understand
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