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Saturday, 31 October

JEE Main 2024 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 27 January 2024, Shift 1, Physics Q34

Question 34 of 90 in this shift, Physics question 4 of 30, Section A.

A train is moving with a speed of 12 m/s on rails which are 1.5 m apart. To negotiate a curve of radius 400 m, the height by which the outer rail should be raised with respect to the inner rail is (Given, g = 10 m/s2^2) :
  1. (1)4.2 cm
  2. (2)4.8 cm
  3. (3)5.4 cmOfficial answer
  4. (4)6.0 cm

Official answer

Option 3

NTA final key.

Chapter
Laws of Motion
Topic
Circular Motion
Idea tested
Banking of Roads

Same idea in other shifts

Asked 2× in all
  1. 17 Mar 2021, Shift 1 · Q2A modern grand - prix racing car of mass m is travelling on a flat track in a circular arc of radius R with a speed vv. If the…MediumDiagram basedHas a figure

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 108 of the 174 JEE Main shifts held from 2017 to 2026.