Bissoy.com
Doctors Medicines MCQs Q&A

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 14 billion light-years distant. Select the correct answer using the code given below: Correct Answer 1 and 2 only

The second observation of gravitational waves was made on 26 December 2015 and announced on 15 June 2016.

  • Gravitational waves were generated due to merger of two black holes at about 1.4 billion light-years distant. Only Statement 3 is incorrect.

Terms

Meaning

Gravitational waves

The disturbance in the fabric of space time generated by accelerated masses and propagate as waves outward from their source at the speed of light

Laser Interferometer Gravitational-Wave Observatory (LIGO)

 Large-scale physics experiment and observatory to detect cosmic gravitational waves and to develop gravitational-wave observations as an astronomical tool.

Related Questions

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.
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?
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. All stars are white. II. All white are moon. III. No moon is blue. Conclusions: I. Some moon are stars. II. No blue is stars. III. Some white are stars. IV. Some blue are white.
In each of the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they
seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements.
Statements:
I. All stars are white.
II. All white are moon.
III. No moon is blue.
Conclusions:
I. Some moon are stars.
II. No blue is stars.
III. Some white are stars.
IV. Some blue are white.
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. All stars are blue. II. All blue are white. Conclusions: I. All stars are white. II. Some stars are not white.
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. All stars are blue. II. All blue are black. Conclusions: I. Some black are stars. II. All black are stars.
There are two boxes. Box I contains one white card and two black cards and Box II contains one white card and a black card. Two persons P and Q play a game. P picks a card randomly from Box I. If P finds the white card, P wins and the game stops. If P finds the black card, Q draws a card randomly from Box II. If Q finds the white card Q wins. The game stops whether Q draws the white card or P draws the white card. Which one of the following is correct?
In the question given below, are given two statements followed by a few conclusions as options. You have to take the two given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusion and then decide which of the given conclusions basically follows from the two given statements discarding commonly known facts. Statements: 1. All stars are planets 2. All planets are moons Conclusions: 1. All moons are planets 2. Some planets are stars 3. Some moons are stars 4. All planets are stars
How does a host on an Ethernet LAN know when to transmit after a collision has occurred?
1. In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.
2. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting.
3. You can improve the CSMA/CD network by adding more hubs.
4. After a collision, the station that detected the collision has first priority to resend the lost data.
5. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.
Below are given statements followed by four conclusions. You have to take the given statements to be true even if they appear to be at variance with commonly known facts, and then decide which of conclusions logically follows from the given statements. Statements: Some TV are LED. Some LED are LCD. All LCD are black. No black is white. Conclusions: I. Some LED are not white. II. Some TV are black. III. All black are LCD. IV. Some black are LCD.