Go Back   Physics Help Forum > College/University Physics Help > Advanced Optics

Advanced Optics Advanced Light and Optics Physics Help Forum

LinkBack Thread Tools Display Modes
Old Aug 9th 2010, 07:16 PM   #1
Junior Member
Join Date: Nov 2009
Posts: 3
Glass Sphere with Scratch

Hi was hoping to get some help with this problem I cant picture the actual problem.

A glass sphere 5 cm in diameter has a small scratch on its surface. When the scratch is viewed from a position directly opposite where does the scratch appear and what is its magnification? Assume n= 3/2 for glass.

Im not sure whether this means So=0 for the distance through air? I really cant picture this problem any help would be much appreciated
Willy99 is offline   Reply With Quote
Old Aug 9th 2010, 08:35 PM   #2
Senior Member
Join Date: Dec 2008
Location: Udupi, Karnataka, India
Posts: 292
You have to assume that the scratch is inside the glass. So

n/do + 1/di = (n-1)/R

where do is the object distance, di is the image distance and r is the radius of curvature.

Find di and then the magnification.
sa-ri-ga-ma is offline   Reply With Quote

  Physics Help Forum > College/University Physics Help > Advanced Optics

glass, optics, scratch, sphere

Search tags for this page
Click on a term to search for related topics.
Thread Tools
Display Modes

Similar Physics Forum Discussions
Thread Thread Starter Forum Replies Last Post
what is the secret to glass's transparency. timemachine2 Atomic and Solid State Physics 0 Mar 12th 2016 03:39 PM
Laser and glass fiber jaiii Theoretical Physics 0 Feb 8th 2011 07:43 AM
Which of the glass lenses above... jenshu Light and Optics 1 Feb 22nd 2010 04:59 AM
Glass Slab question ice_syncer Light and Optics 2 Dec 15th 2008 12:57 PM
Magnifying glass werehk Light and Optics 2 Dec 14th 2008 08:17 AM

Facebook Twitter Google+ RSS Feed