Solved papers for JEE Main & Advanced JEE Main Solved Paper-2015

done JEE Main Solved Paper-2015 Total Questions - 3

• question_answer1) In the given circuit, charge \[{{Q}_{2}}\] on the \[2\mu F\] capacitor changes as C is varied from \[1\mu F\] to \[3\mu F.{{Q}_{2}}\] as a function of 'C' is given properly by : (figures are drawn schematically and are not to scale) [JEE Main Solved Paper-2015 ]
  A)
       
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  B)
  
  done clear
  C)
   
  done clear
  D)
  
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• question_answer2) A uniformly charged solid sphere of radius R has potential V0 (measured with respect to \[\infty \] ) on its surface. For this sphere the equipotential surfaces with potentials \[\frac{3{{V}_{0}}}{2},\frac{5{{V}_{0}}}{4},\frac{3{{V}_{0}}}{4}\]and \[\frac{{{V}_{0}}}{4}\]have  radius \[{{R}_{1}},{{R}_{2}},{{R}_{3}}\] and\[{{R}_{4}}\] respectively. Then [JEE Main Solved Paper-2015 ]
  A)
  \[{{R}_{1}}=0\]and\[{{R}_{2}}<\left( {{R}_{4}}-{{R}_{3}} \right)\]
  done clear
  B)
  \[2R<{{R}_{4}}\]
  done clear
  C)
  \[{{R}_{1}}=0\]and\[{{R}_{2}}>\left( {{R}_{4}}-{{R}_{3}} \right)\]
  done clear
  D)
  \[{{R}_{1}}\ne 0\]and\[\left( {{R}_{2}}-{{R}_{1}} \right)>\left( {{R}_{4}}-{{R}_{3}} \right)\]
  done clear
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• question_answer3) D / Physics A long cylinderal shell carries positive surface charge \[\sigma \] in the upper half and negative surface charge \[-\sigma \]in the lower half. The electric field lines around the cylinder will looke like figure given in : (Figures are schematic and not drawn to scale) [JEE Main Solved Paper-2015 ]
  A)
                 
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  B)
  
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  C)
                                 
  done clear
  D)
  
  done clear
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