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Friday, 9 October

JEE Main 2021 · PhysicsMultiple choiceTwo statementsMediumApplication

JEE Main 16 March 2021, Shift 2, Physics Q15

Question 15 of 90 in this shift, Physics question 15 of 30, Section A.

Statement I : A cyclist is moving on an unbanked road with a speed of 7 kmh−1\mathrm{kmh^{-1}} and takes a sharp circular turn along a path of radius of 2m without reducing the speed. The static friction coefficient is 0.2. The cyclist will not slip and pass the curve. (g=9.8 m/s2g=9.8\ \mathrm{m/s^2}) Statement II : If the road is banked at an angle of 45∘45^\circ, cyclist can cross the curve of 2m radius with the speed of 18.5 kmh−1\mathrm{kmh^{-1}} without slipping. In the light of the above statements, choose the correct answer from the options given below.
  1. (1)Both statement I and statement II are trueOfficial answer
  2. (2)Both statement I and statement II are false
  3. (3)Statement I is correct and statement II is incorrect
  4. (4)Statement I is incorrect and statement II is correct

Official answer

Option 1

NTA final key.

Chapter
Laws of Motion
Topic
Circular Motion
Idea tested
Friction on Unbanked Flat Curves

Same topic in other shifts

All Circular Motion questions
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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.