Solved papers for JEE Main & Advanced JEE Main Paper (Held On 9 April 2016)

done JEE Main Paper (Held On 9 April 2016) Total Questions - 2

• question_answer1) To find the focal length of a convex mirror, a student records the following data :

  Object pin	Convex Lens	Convex Mirror	Image Pin
  22.2 cm	32.2 cm	45.8 cm	71.2 cm

  The focal length of the convex lens is\[{{f}_{1}}\] and that of mirror is \[{{f}_{2}}.\]Then taking index correction to be negligibly small, \[{{f}_{1}}\]and \[{{f}_{2}}.\] are close to :   JEE Main Online Paper (Held On 09 April 2016)
  A)
  \[{{f}_{1}}=15.6cm\]                       \[{{f}_{2}}=25.4cm\]                
  done clear
  B)
  \[{{f}_{1}}=7.8cm\]                         \[{{f}_{2}}=12.7cm\]                
  done clear
  C)
  \[{{f}_{1}}=7.8cm\]                         \[{{f}_{2}}=25.4cm\]                
  done clear
  D)
  \[{{f}_{1}}=12.7cm\]                       \[{{f}_{2}}=7.8cm\]                
  done clear
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• question_answer2) A convex lens, of focal length 30cm, a concave lens of focal length 120 cm, and a plane mirror are arranged as shown. For an object kept at a distance of 60 cm from the convex lens, the final image, formed by the combination, is a real image, at a distance of : Focal length| |Focal length| = 30 cm =120 cm   JEE Main Online Paper (Held On 09 April 2016)
  A)
  70 cm from the concave lens                
  done clear
  B)
  60 cm from the convex lens                
  done clear
  C)
  60 cm from the concave lens                
  done clear
  D)
  70 cm from the convex lens
  done clear
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