Gravitational Waves Detection and Current Developments

Gravitational waves were detected from the merger of two black holes by the U.S based observatory on December 26, 2015 . This has confirmed that the merger of binary black holes on September 14, 2015 was not a chance discovery.

1) Which of the following statements is/are correct with respect to Gravitational Waves?

a) These waves ripples out from a cosmic supermassive collision.
b) These waves can be detected through the stretching and contracting of space and time.
c) a and b only
d) Gravitational waves can travel through space.

2) Which of the following statements is/are incorrect in context of recently detected 'Direct Gravitational Waves'?

a) These waves substantiates the prediction of Einstein's theory of 'General Relativity'.
b) The discovery would help in study of nature of black holes and the Big Bang theory.
c) Both a and b
d) Neither a nor b

3) Which of the following Gravitational Wave detectors and the country they belong to is/are correctly matched?

i) LIGO - United States
ii) VIRGO - China
iii) INDIGO - India

a) i only
b) i and iii only
c) All of the above
d) i and ii only

4) Recent discovery at LIGO facility marks which of the following milestones?

a) First direct detection of Gravitational Waves.
b) First detection of binary black holes.
c) Confirming that nature's black holes are objects predicted by Einstein's theory.
d) All of the above

5) Consider the following statements and mark the correct option?

a) Simultaneous operation of 2 LIGO detectors and VIRGO detector will improve the ability to locate the source of each new event.
b) As the arrival time of incoming gravitational wave signals increases, the precision of source location will further improve.
c) Both a and b
d) Neither a nor b

Answers

1) c
2) d
3) b, The VIRGO detector is located near Pisa, Italy . The LIGO detectors are located in Livingstone in Louisiana and Hanford in Washington.
4) d
5) c

References :

LIGO Scientific Collaboration: http://www.ligo.org/

Gravitational Waves: http://www.bbc.com/news/science-environment-35524440,http://www.economist.com/news/science-and-technology/21692851-gravitational-waves-at-LIGO-century-after-Albert-Einstein-predicted-them

Current Affairs Based Objective Questions

1) Which of the following states has become the first state in India to implement the use of injectable contraceptives as a family planning measure under 'Project Salamati' ?

a) Nagaland
b) Kerala
c) Haryana
d) Bihar

2) The guidelines based on K.S.Radhakrishnan committee's recommendations have been approved by the Supreme Court of India. The committee is related to which of the following options?

a) Protecting Good Samaritans against victimization by any authority.
b) Framing anti money laundering laws in wake of leaked Panama Papers.
c) Reforming colonial era Sedition Law.
d) None of the above.

3) The agreement to set up LIGO (Laser Interferometer Gravitational Wave Observatory) facility in India has been made with which of the following countries?

a) Japan
b) Switzerland
c) United States
d) France

4) Which of the following statements is incorrect in context of Sonar Dome?

a) It has been indigenously designed and produced by DRDO.
b) It functions as the ship's underwater eyes and ears.
c) It is usually fitted to the ship structure above the waterline.
d) It avoid exposure of its electronics and sensors to surrounding hostile environment.

5) 3-D map of which of the following viruses has been recently revealed by a university in United States?

a) Zika Virus
b) Ebola Virus
c) Avian influenza virus
d) None of the above

Answers

1) c
2) a
3) c
4) c, below the waterline
5) a , It will help in finding an effective antiviral treatment or vaccine for the virus