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Question No. 218Interactive Test Mode
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Q218. A spherical body moves with a uniform angular velocity (ω) around a circular path of radius r. Which one of the following statements is correct?

A spherical body moves with a uniform angular velocity (ω) around a circular path of radius r. Which one of the following statements is correct?

Select the correct option below (or cross out options to eliminate)

Official Answer Key & Detailed Solution

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Official UPSC Answer KeyUPSC Prelims 2004 • Science and Technology

Correct Answer: Option (B) — The body has a radial acceleration ω2r directed toward centre of path

Concept & Option Breakdown

Standard Reference Verified

In uniform circular motion, even though the angular velocity and speed are constant, the continuous change in the direction of linear velocity produces a centripetal (radial) acceleration directed toward the center of the circular path. Its magnitude is given by $a_c = \omega^2 r = \frac{v^2}{r}$.

Elimination Heuristic & Exam Approach

Any object in circular motion experiences radial/centripetal acceleration directed toward the center equal to $\omega^2 r$.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2004 (Q218)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (B) — The body has a radial acceleration ω2r directed toward centre of path

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Frequently Asked Questions — UPSC Prelims 2004 Q218

What is the official answer for UPSC Prelims 2004 GS Paper I Question 218 (Science and Technology)?

The official UPSC answer key for this 2004 Science and Technology (Health & Medicine) question is Option (B): "The body has a radial acceleration ω2r directed toward centre of path". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2004 question belong to?

This question belongs to GS Paper I under the subject "Science and Technology" and micro-topic "Health & Medicine". You can explore all repeated questions from Health & Medicine in Acme AI's 3D Prelims PYQ Realm or practice 50 full-length and sectional tests in the APT Prelims Test Series.

How can I solve this Health & Medicine UPSC Prelims question using option elimination?

Any object in circular motion experiences radial/centripetal acceleration directed toward the center equal to $\omega^2 r$.

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