Physics-
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Easy

Question

A point object ‘O’ is placed along x-axis An equi-convex thin lens open parentheses mu subscript g end subscript equals 1.5 close parentheses of focal length f=20cm in air is placed so that its principal axis is along x-axis Now the lens is cut at the middle (along the principal axis) and upper half is shifted along x-axis and y-axis by 20cm and 2mm respectively and right side of lower half is filled with water open parentheses mu subscript w end subscript equals fraction numerator 4 over denominator 3 end fraction close parentheses co-ordinates of image formed by lenses are

  1. open parentheses fraction numerator 320 over denominator 3 end fraction c m comma fraction numerator 8 over denominator 3 end fraction m m close parentheses    
  2. open parentheses fraction numerator 320 over denominator 3 end fraction c m comma 0 close parentheses    
  3. left parenthesis 80 c m comma 0 right parenthesis    
  4. left parenthesis 140 c m comma 0 right parenthesis    

The correct answer is: open parentheses fraction numerator 320 over denominator 3 end fraction c m comma fraction numerator 8 over denominator 3 end fraction m m close parentheses

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