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Friday, 9 October

JEE Main 2026 · PhysicsMultiple choiceSingle correctMediumMulti-step

JEE Main 5 April 2026, Shift 1, Physics Q43

Question 43 of 75 in this shift, Physics question 18 of 25, Section A.

Two wires as shown in the figure below, made of steel and have breaking stress of 12×108 N/m212 \times 10^8\ \mathrm{N/m^2}. Area of cross-section of upper wire is 0.008 cm20.008\ \mathrm{cm^2} and of lower wire is 0.004 cm20.004\ \mathrm{cm^2}. The maximum mass that can be added to pan without breaking any wire is ______ kg. (take g=10 m/s2g = 10\ \mathrm{m/s^2})

The figure, in words

Upper wire hangs from the ceiling and carries a 30 kg block; the lower wire hangs from the 30 kg block and carries a 10 kg block, below which a pan is attached.
  1. (1)56
  2. (2)38Official answer
  3. (3)96
  4. (4)5.6

Official answer

Option 2

NTA final key.

Chapter
Mechanical Properties of Solids
Topic
Elasticity
Idea tested
Breaking Stress and Breaking Force

Same idea in other shifts

Asked 2× in all
  1. 6 Apr 2026, Shift 1 · Q30A lift of mass 1600 kg is supported by thick iron wire. If the maximum stress which the wire can withstand is 4×1084\times10^8 N/m2^2 and…MediumSingle correct

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. This question needs a figure we do not reproduce; it is described in words above. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.