Here is Question No. 62 a part of our series on UPSC Prelims 2018
Q62. Consider the following phenomena:
- Light is affected by gravity.
- The Universe is constantly expanding.
- Matter warps its surrounding spacetime.
Which of the above is/are the predictions/predictions of Albert Einstein’s General Theory of Relativity, often discussed in the media?
(a) 1 and 2 only
(b) 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Answer: D
- Statement 1 is correct: Einstein’s General The theory of Relativity is based on how we think gravity governs the behaviour of the Universe. According to Einstein’s theory, light, just like any other form of matter, is affected by gravity. That is, the light also “falls” in a gravitational field.
- Statement 2 is correct: General relativity also predicts the existence of gravitational waves, which have since been observed directly by the physics collaboration LIGO. In addition, general relativity is the basis of current cosmological models of a consistently expanding universe.
- Statement 3 is correct: Hubble Space The telescope captured the image of a phenomenon called Einstein Ring. General relativity is Einstein’s law of gravity, his Justification of that fundamental force that holds us to the surface of the Earth. Gravity, Einstein asserted, is caused by the warping of space and time or space-time.
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