Solved papers for JEE Main & Advanced JEE Main Paper (Held On 10 April 2016)

done JEE Main Paper (Held On 10 April 2016) Total Questions - 2

• question_answer1) A bottle has an opening of radius a and length b. A cork of length b and radius \[\left( a+\Delta a \right)\] where \[\left( \Delta a<          JEE Main Online Paper (Held On 10 April 2016)         
  A)
  \[\left( 2\pi g\mu B\,\,b \right)\Delta a\]                
  done clear
  B)
  \[\left( \pi \mu B\,\,b \right)\Delta a\]                
  done clear
  C)
  \[\left( \pi \mu \,B\,\,b \right)a\]                               
  done clear
  D)
  \[\left( 4\pi \mu \,B\,\,b \right)\Delta a\]                
  done clear
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• question_answer2) A thin 1m long rod has a radius of 5 mm. A force of \[50\,\,\pi kN\]is applied at one end to determine its Young's modulus. Assume that the force is exactly known. If the least count in the measurement of all lengths is 0.01 mm, which of the following statements is false?   JEE Main Online Paper (Held On 10 April 2016)
  A)
  The maximum value of Y that can be determined is \[{{10}^{14}}N/{{m}^{2}}\]
  done clear
  B)
  \[\frac{\Delta Y}{Y}\]?gets minimum contribution from the uncertainty in the length.
  done clear
  C)
  The figure of merit is the larges for the length of the rod.
  done clear
  D)
  \[\frac{\Delta Y}{Y}\]gets its maximum contribution from the uncertainty in strain.
  done clear
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