Multiple choice

A clock with a metal pendulum is 5 sec fast each day at a temperature of ${ 15 }^{ \circ }C$ and 10 sec slow at ${ 30 }^{ \circ }C$. The coefficient of linear expression of that material is

  1. $2.31\times { 10 }^{ -5 }$ $^{ 0 }{ C }^{ -1 }$
  2. $4.62\times { 10 }^{ -5 }$ $^{ 0 }{ C }^{ -1 }$
  3. $2.13\times { 10 }^{ -5 }$ $^{ 0 }{ C }^{ -1 }$
  4. $4.5\times { 10 }^{ -5 }$ $^{ 0 }{ C }^{ -4 }$
Reveal answer Fill a bubble to check yourself
C Correct answer

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