Change set

Pick exam & year, then Go.

Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
Q114 (CAPF/2024) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Astronomy and astrophysics

Which one of the following statements with reference to the Nebular Hypo- thesis for the origin of Solar System is correct?

Result
Your answer: —  Â·  Correct: D
Explanation

The Nebular Hypothesis, proposed by Immanuel Kant and refined by Pierre-Simon Laplace in 1796, posits that the solar system originated from a slowly rotating, cooling, and shrinking cloud of gas and dust [2]. As the nebula contracted due to gravity, it began to rotate more rapidly to conserve angular momentum, causing it to flatten into a disk shape. While the central mass condensed to form the proto-Sun, centrifugal forces caused the nebula to shed successive rings of material [2]. These rings of gas and dust eventually cooled and condensed through accretion to form the planets and their satellites, which continue to revolve in orbits around the central Sun [1][2]. Modern revisions by Schmidt and Weizscker further detailed how friction and collisions within this disk-shaped cloud facilitated the formation of planets from the dust and gas [1][2].

Sources

  1. [2] FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 1: Geography as a Discipline > Origin of the Earth > p. 13
  2. [1] Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 2: The Solar System > Earlier Theories > p. 17
How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
26%
got it right
✓ Thank you! We'll review this.

SIMILAR QUESTIONS

5 Cross-Linked PYQs

UPSC repeats concepts across years. Login to see how this question connects to 5 others.

Login with Google