Q76 (CDS-I/2017) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Basic Science (Physics, Chemistry, Biology)

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.

A

1 only

B

1 and 2 only

C

2 and 3 only

D

1, 2 and 3

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