The terms ‘Event Horizon’, ‘Singularity’, ‘String Theory’ and ‘Standard Model’ are sometimes seen in the news in the context of

1. A. Observation and understanding of the Universe
2. B. Study of the solar and the lunar eclipses
3. C. Placing satellites in the orbit of the Earth
4. D. Direct transfer of subsidies to poor people will become very effective.

Answer: A

Explanation

The terms – ‘Event Horizon’ – boundary in space-time, ‘Singularity’ – location in space-time where the gravitational field of a celestial body becomes infinite, ‘String Theory’ – links together all physical aspects, and ‘Standard Model’ – unifying the four fundamental forces, are related to the observations and understanding of the Universe. Hence option (a) is the correct answer.