Optics,how many images will the object form?

  • #1
optics,how many images will the object form???

Homework Statement



the lens shown in figure 19.16(http://img705.imageshack.us/img705/5066/figure1916.png [Broken] made of two different materials . a point object is placed on the axis....how many images will the object form???

Homework Equations



1/f = (n-1) [1/R1 - 1/R2], where f is the focal length, n is the refractive index, R1,R2 - radii of the curvature of refracting surfaces.

The Attempt at a Solution



i didnt reach the answer but i think it has something with refractive index , and focal lenth.....plz help..
 
Last edited by a moderator:

Answers and Replies

  • #2


ya forgot the choices

a)one

b)two

c)three

c)no image
 
  • #3
668
0


If you just had the middle bit of the lens, would it form an image, more than one image, or none?
 

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