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Consider the following statements about Gravitational Waves: 1. Albert Einstein predicted the existence of gravitational waves in 1916 in his general theory of relativity. 2. The gravitational waves can work as sirens to measure the expansion rate of the universe and to understand the origin and the future of the universe. 3. In 2015, LIGO physically sensed the distortions in spacetime caused by passing gravitational waves generated by two colliding black holes nearly 1.3 billion light-years away Which of the statements given above is/are correct?

Consider the following statements about Gravitational Waves: 1. Albert Einstein predicted the existence of gravitational waves in 1916 in his general theory of relativity. 2. The gravitational waves can work as sirens to measure the expansion rate of the universe and to understand the origin and the future of the universe. 3. In 2015, LIGO physically sensed the distortions in spacetime caused by passing gravitational waves generated by two colliding black holes nearly 1.3 billion light-years away Which of the statements given above is/are correct? Correct Answer 1, 2 and 3

The correct answer is 1, 2 and 3.

Important Points

  • Gravitational waves are ‘ripples’ in the fabric of space-time caused by some of the most violent and energetic processes in the Universe.
  • These ripples travel at the speed of light through the Universe, carrying with them information about their origins.
  • Albert Einstein predicted the existence of gravitational waves in 1916 in his general theory of relativity. Hence, statement 1 is correct.
  • He observed that massive accelerating objects (such as neutron stars or black holes orbiting each other) would disrupt space-time in such a way that ‘waves’ of distorted space would radiate from the source (like the movement of waves away from a stone thrown into a pond).
  • The gravitational waves can work as sirens to measure the expansion rate of the universe and to understand the origin and the future of the universe. Hence, statement 2 is correct.
  • In 2015, LIGO (The Laser Interferometer Gravitational-Wave Observatory, USA) physically sensed the distortions in space-time caused by passing gravitational waves generated by two colliding black holes nearly 1.3 billion light-years away. Hence, statement 3 is correct. 

Related Questions

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Which of the following statements is/are correct? 1. In June 2016, the LIGO group of scientists announced the detection of a second set of gravitational waves. 2. Gravitational waves were generated due to merger of two black holes at about 1.4 billion light-years distant. 3. Gravitational waves were inserted due to collision of two white dwarf stars at about 14 billion light-years distant. Select the correct answer using the code given below:
Which of the following statements is/are correct? 1.In June 2016, the LIGO group of scientists announced the detection of a second set of gravitational waves. 2.Gravitational waves were generated due to merger of two black holes at about 1.4 billion light-years distant. 3.Gravitational waves were inserted due to collision of two white dwarf stars at about 1.4 billion light-years distant. Select the correct answer using the code given below.
Newton, Einstein, and Tesla working alone can do a piece of work in 20, 30, and 60 days respectively. All three of them start the work together, but after x days Newton leaves and then after y more days Einstein leaves and Tesla completes the remaining work. If Einstein had not left, Tesla and Einstein would have completed the remaining work in (y + 6) days after Newton had left. If both Newton and Einstein had stayed, the work would have been completed in (x + 6) days. What is the total number of days taken to complete the work?
Gravitational waves predicted by albert Einstein was first detected by LIGO and Birgo Scientific Collaboration in the year -
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