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Saturday, 31 October

JEE Main 2020 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 8 January 2020, Shift 2, Physics Q5

Question 5 of 75 in this shift, Physics question 5 of 25, Section A.

A uniform sphere of mass 500 g500\ \mathrm{g} rolls without slipping on a plane horizontal surface with its centre moving at a speed of 5.00 cm/s5.00\ \mathrm{cm/s}. Its kinetic energy is :
  1. (1)6.25×10−4 J6.25\times10^{-4}\ \mathrm{J}
  2. (2)1.13×10−3 J1.13\times10^{-3}\ \mathrm{J}
  3. (3)8.75×10−4 J8.75\times10^{-4}\ \mathrm{J}Official answer
  4. (4)8.75×10−3 J8.75\times10^{-3}\ \mathrm{J}

Official answer

Option 3

NTA final key (Jan 2020).

Topic
No close match in our taxonomy
Idea tested
No close match in our taxonomy

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.