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UPSC 1996: When an air bubble at the bottom of a lake rises to the top, it will
(a)increase in size
(b)decrease in size
(c)maintain its size
(d)flatten into a disk-like shape
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Not attemptedCorrect Answer: (a) increase in size
At depth the bubble is under higher hydrostatic pressure. As it rises, external pressure decreases; by Boyle’s law (P ∝ 1/V at constant temperature) its volume therefore increases, so the bubble grows larger. ([licchavilyceum.com](https://licchavilyceum.com/upsc-civil-services-prelims-1996-solved-question-paper/))
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Frequently Asked Questions
What is the correct answer to this UPSC 1996 Science & Technology question?▼
The correct answer is option (a): increase in size. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Physics question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 1996, GS Paper 1, as Question 115. It falls under Science & Technology > Physics.
What is the difficulty level of this UPSC question?▼
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
How many UPSC Prelims questions have been asked from Physics?▼
UPSC has asked 104 questions from Physics (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.