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JEE Main 2021 · PhysicsNumerical answerNumerical valueMediumCalculation

JEE Main 31 August 2021, Shift 1, Physics Q25

Question 25 of 90 in this shift, Physics question 25 of 30, Section B.

When a rubber ball is taken to a depth of __________ m in deep sea, its volume decreases by 0.5%. (The bulk modulus of rubber =

9.8\times10^{8}

Nm

^{-2}

Density of sea water =

10^3

kgm

^{-3}

g = 9.8 m/s

^2

)

Official answer

500

NTA final key.

Chapter: Mechanical Properties of Fluids
Topic: Elasticity
Idea tested: Compressibility and Density Changes

Same idea in other shifts

Asked 2× in all

26 Feb 2021, Shift 1 · Q7The normal density of a material is $\rho$ and its bulk modulus of elasticity is K. The magnitude of increase in density of material, when…EasySingle 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. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.