[PPSC SOs (Ballistics, Documents Photography, AudioVoice) SAs (Ballistics, Photography AudioVoice) 2023]

41. Recently, scientists observed the merger of two ‘black holes’ billions of light years away from the Earth. What is the significance of these observations?

1. Existence of ‘black holes’ was confirmed

2. Higgs Bosons particles were detected

3. 'Gravitational Waves’ were detected

4. Einstein’s Special Theory of Relativity was proved

Correct Answer :

'Gravitational Waves’ were detected