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The diagram below shows two point sources (red dots at top) and two opaque objec

ID: 1661614 • Letter: T

Question

The diagram below shows two point sources (red dots at top) and two opaque objects (black rectangles). Five points on a screen at the bottom are indicated by the letters V, W, X, Y, and Z. Indicate what kind of shadow, if any, would there be at that point on the screen.

Point V:

Complete Shadow

Partial Shadow  

  Full Light

Point W:

Full Light

Partial Shadow   

Complete Shadow

Point X:

Full Light

Partial Shadow    

Complete Shadow

Point Y:

Complete Shadow

Partial Shadow    

Full Light

Point Z:

Full Light

Complete Shadow   

Partial Shadow

Explanation / Answer

Point V:

Full Light

Point W:

Partial Shadow   

Point X:

Complete Shadow

Point Y:

Partial Shadow    

Point Z:

Partial Shadow