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Q7.9: NCERT Physics - Part 1 GRAVITATION 7.9 Solution: Which of the following symptoms is likely to afflict an…
⚠️ Common Exam Traps & Conceptual Pitfalls
Students frequently attribute headaches and orientation problems in microgravity to mental strain or the absence of a fixed orientation, but the correct explanation involves fluid shift to the head and vestibular system adaptation. Focus on physiological fluid redistribution ($Delta V$) and vestibular disturbances rather than psychological causes.
Which of the following symptoms is likely to afflict an astronaut in space (a) swollen feet, (b) swollen face, (c) headache, (d) orientational problem.
Step-by-Step Verified Solution
**Answer:** (b), (c), and (d)
**Step-by-Step Explanation:**
(a) Swollen feet do not affect astronauts in space because legs do not hold body mass in the absence of gravity.
(b) Swollen face is caused by apparent weightlessness, affecting sense organs in the face.
(c) Headache can be caused by mental strain in space.
(d) Orientational problems can occur because space has different orientations [citation:15].
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