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MHT CET202016 Oct 2020Evening ShiftPhysicsMechanical Properties of SolidsActual

Two wires A and B are stretched by the same load. The radius of wire A is double the radius of wire B . The stress on the wire B as compared to the stress on the wire A is

Options

  1. Atwice
  2. Bfour times
  3. Chalf
  4. Dequal

Correct answer

B. four times

Step-by-step solution

(B) stress = Force Area stress 1 r² Thus, S_ B S_ A = [ r_ A r_ B ]²=(2)² S_ B =4 S_ A

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