Light spreads out when it passes through a narrow slit because of?
a; Interference
b; diffraction
c; specular reflection
d; diffuse reflection
e; polarization

Hi answer123!!

The correct answer to this question is b)Diffraction
When light waves pass near a barrier, they tend to bend around that
barrier and spread out at oblique angles.

"Reflection involves a change in direction of waves when they bounce
off a barrier; refraction of waves involves a change in the direction
of waves as they pass from one medium to another; and diffraction
involves a change in direction of waves as they pass through an
opening or around an obstacle in their path."
Taken from "The Physics Classroom - Lesson 1: How Do We Know Light
Behaves as a Wave?"
http://www.physicsclassroom.com/Class/light/U12L1a.html


More information will be found here (you will like this!!):
"OLYMPUS MIC-D: Physics of Light and Color - Diffraction of Light"
http://www.mic-d.com/curriculum/lightandcolor/diffraction.html

"OLYMPUS MIC-D: Interactive Java Tutorial - Diffraction of Light"
http://www.mic-d.com/java/basicdiffraction/index.html


Definition:
"Diffraction: a modification which light undergoes in passing by the
edges of opaque bodies or through narrow slits or in being reflected
from ruled surfaces and in which the rays appear to be deflected and
to produce fringes of parallel light and dark or colored bands; also :
a similar modification of other waves (as sound waves)"
from "Physics Tutoring Electricity, Magnetism, and Optics -
Diffraction" by Irina Nelson, Ph.D:
http://www.slcc.edu/schools/hum_sci/physics/tutor/2220/diffraction/


Search keywords:
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I hope this helps you, if you need some clarification, please post a
request for it.

Best Regards
livioflores-ga