space hard MCQ

Shapiro delay measures general relativistic time dilation of signals passing near massive bodies.

  1. True - confirmed by Cassini/radar ranging
  2. False - Newtonian effect
  3. True - only for light not radio
  4. False - disproven by LIGO

Answer: True - confirmed by Cassini/radar ranging

Signals traversing curved spacetime experience extra delay proportional to gravitational potential; Cassini solar conjunction test verified GR to 10⁻⁵ precision.

Topic Astronomy - Relativity
Exam Relevance UPSC Prelims, General Science
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