Solved papers for NEET Physics Elasticity NEET PYQ-Elasticity

done NEET PYQ-Elasticity Total Questions - 6

• question_answer1) The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied? [NEET 2013]
  A)
  Length = 50 cm, diameter = 0.5 mm
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  B)
  Length = 100 cm, diameter = 1 mm
  done clear
  C)
  Length = 200 cm, diameter = 2 mm
  done clear
  D)
  Length = 300 cm, diameter = 3 mm
  done clear
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• question_answer2) Copper of fixed volume V is drawn into wire of length \[l\]. When this wire is subjected to a constant force F, the extension produced in the wire is\[\Delta l\]. Which of the following graphs is a straight line? [NEET 2014]
  A)
  \[\Delta l\] versus \[\frac{1}{l}\]   
  done clear
  B)
  \[\Delta l\] versus \[{{l}^{2}}\]
  done clear
  C)
  \[\Delta l\] versus \[\frac{1}{{{l}^{2}}}\]
  done clear
  D)
  \[\Delta l\] versus \[l\]
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• question_answer3) The approximate depth of an ocean is 2700 m. The compressibility of water is \[45.4\times {{10}^{-11}}P{{a}^{-1}}\] and density of water is \[{{10}^{3}}kg/{{m}^{3}}\]. What fractional compression of water will be obtained at the bottom of the ocean?[NEET 2015 (C)]
  A)
  \[0.8\times {{10}^{-2}}\]
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  B)
  \[1.0\times {{10}^{-2}}\]
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  C)
  \[1.2\times {{10}^{-2}}\]
  done clear
  D)
  \[1.4\times {{10}^{-2}}\]
  done clear
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• question_answer4) Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the second wire has cross-sectional area 3A. If the length of the first wire is increased by \[\Delta /\]on applying a force F, how much force is needed to stretch the second wire by the same amount?                 [NEET - 2018]
  A)
  4 F
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  B)
  6 F
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  C)
  9 F
  done clear
  D)
  F
  done clear
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• question_answer5) When a block of mass M is suspended by a long wire of length L, the length of the wire becomes\[(L+l)\]. The elastic potential energy stored in the extended wire is-                      [NEET 2019]
  A)
   \[\frac{1}{2}Mgl\]
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  B)
  \[\frac{1}{2}MgL\]
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  C)
  \[Mgl\]
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  D)
  \[MgL\]
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• question_answer6) A wire of length L, area of cross section A is hanging from a fixed support. The length of the wire changes to \[{{L}_{1}}\]when mass M is suspended from its free end. The expression for Young’s modulus is :          [NEET 2020]
  A)
        \[\frac{Mg\left( {{L}_{1}}-L \right)}{AL}\]
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  B)
  \[\frac{MgL}{A{{L}_{1}}}\]
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  C)
  \[\frac{MgL}{A\left( {{L}_{1}}-L \right)}\]
  done clear
  D)
  \[\frac{Mg{{L}_{1}}}{AL}\]
  done clear
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