Distinguish between zone plate and convex lens
Answers
Answer:
zone plate is a device used to focus light or other things exhibiting wave character. A convex lens is a converging lens. When parallel rays of light pass through a convex lens the refracted rays converge at one point called the principal focus.
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ZONE PLATE CONVEX LENS
1) works by diffraction 1) works by
refraction
2) image produced is not intense 2) image
produced is
intense
3) has an array of focal lengh. 3) has single
single focal
point
4) focal lenght of zone plate is inversly 4) focal lenth is
directly
proportional to
wavelenght.
5) time delay when light passes from 5) no time delay
one period to another when light
passes from one
period to
another
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