Question 65 from UPSC CSE 2017 - Current
Affairs

Question

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

Accepted Answer

Correct Option: A. Observation and understanding of the Universe

Strategy: Select the broadest category that encompasses all provided terms, which relate to cosmology and fundamental physics.

Key Info: - **Event Horizon**: The boundary around a black hole beyond which nothing, not even light, can escape.
- **Singularity**: The core region within a black hole where gravitational curvature becomes infinite and known physics breaks down.
- **String Theory**: A theoretical framework where point-like particles are replaced with one-dimensional strings, attempting to reconcile quantum mechanics and general relativity.
- **Standard Model**: A well-established theory in particle physics that describes the electromagnetic, weak, and strong nuclear interactions, accounting for all known fundamental particles except gravity.

These terms are integral to the study of the Universe at its most fundamental level, including cosmology, black holes, quantum gravity, and the fundamental structure of matter.

Answer

Option B: Study of the solar and the lunar eclipses

Answer

Option C: Placing satellites in the orbit of the Earth

Answer

Option D: Origin and evolution of living organisms on the earth