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GS Paper IUPSC Prelims 2003
Health & Medicine
Question No. 221Interactive Test Mode
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Q221. Consider the following statements: A 4-wheel vehicle moving in a sharp circular path at high speed will: 1. Overturn about its outer wheels 2. Overturn about its inner wheels 3. Skid outwards 4. Skid inwards Which of these statements are correct?

Consider the following statements: A 4-wheel vehicle moving in a sharp circular path at high speed will:

  1. Overturn about its outer wheels
  2. Overturn about its inner wheels
  3. Skid outwards
  4. Skid inwards Which of these statements are correct?
Select the correct option below (or cross out options to eliminate)
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Official Answer Key & Detailed Solution

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Official UPSC Answer KeyUPSC Prelims 2003 • Science and Technology

Correct Answer: Option (A) — 1 and 3

Concept & Option Breakdown

Standard Reference Verified

When a four-wheeler negotiates a sharp turn at high speed:

  1. Centrifugal reaction acts radially outward, shifting normal reaction towards outer wheels and lifting inner wheels, causing overturning about the outer wheels.
  2. If lateral friction between tires and road is insufficient to provide the necessary centripetal force, the vehicle skids radially outwards. Therefore, statements 1 and 3 are correct.
Elimination Heuristic & Exam Approach

Centrifugal effects always push outward during circular motion, causing outward skidding and tipping over the outer pivot.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2003 (Q221)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicScience and Technology → Health & Medicine
Official Answer KeyOption (A) — 1 and 3

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Frequently Asked Questions — UPSC Prelims 2003 Q221

What is the official answer for UPSC Prelims 2003 GS Paper I Question 221 (Science and Technology)?

The official UPSC answer key for this 2003 Science and Technology (Health & Medicine) question is Option (A): "1 and 3". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2003 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?

Centrifugal effects always push outward during circular motion, causing outward skidding and tipping over the outer pivot.

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