Learn

Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 28 June 2022, Shift 2, Physics Q31

Question 31 of 90 in this shift, Physics question 1 of 30, Section A.

Velocity (vv) and acceleration (aa) in two systems of units 1 and 2 are related as v2=nm2v1v_2 = \frac{n}{m^2}v_1 and a2=a1mna_2 = \frac{a_1}{mn} respectively. Here m and n are constants. The relations for distance and time in two systems respectively are :
  1. (1)n3m3L1=L2\frac{n^3}{m^3}L_1 = L_2 and n2mT1=T2\frac{n^2}{m}T_1 = T_2Official answer
  2. (2)L1=n4m2L2L_1 = \frac{n^4}{m^2}L_2 and T1=n2mT2T_1 = \frac{n^2}{m}T_2
  3. (3)L1=n2mL2L_1 = \frac{n^2}{m}L_2 and T1=n4m2T2T_1 = \frac{n^4}{m^2}T_2
  4. (4)n2mL1=L2\frac{n^2}{m}L_1 = L_2 and n4m2T1=T2\frac{n^4}{m^2}T_1 = T_2

Official answer

Option 1

NTA final key.

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.