space medium MCQ

Saturn's Cassini Division is a gap maintained by orbital resonance with which moon?

  1. Mimas
  2. Enceladus
  3. Tethys
  4. Dione

Answer: Mimas

2:1 mean-motion resonance with Mimas clears particles from Cassini Division; gravitational perturbations prevent stable orbits in this region.

Topic Solar System - Rings
Exam Relevance SSC CGL, UPSC Prelims
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