Wednesday, April 11, 2012

Concave and Convex Mirrors

The pupose for this experiment is to observe the images formed by two different types of mirrors, concave and convex mirros. To analyze the characteristics of the images due to the curvature of the mirror, distance of the object to the mirror and reflected rays.



The first mirror we observed was a convex mirror.


We first placed an object in front of the mirror, the image appeared smaller than the actual object. The image was upright and was located inside the mirror, farther away relative to the distance of the mirror and object.

As the object is moved closer to the mirror, the image gets larger almost to its actual size.

As the object is moved away from the mirror the image gets smaller.










The second mirror was a concave mirror.

We first placed an object in front of the mirror the image appeared larger than the actual object and inverted, this is when the object was located behind the curvature point.

Once the object was moved closer the image was upright.

The image was located relatively closer than the mirror and object.















The magnification of the image is determined by using the lateral magnification:
m = y(i) / y(o) = -s(i) / s(o)
Where y(i) is the height of the image and y(o) is the height of the object.
s(i) is the distance from the mirror to the image and s(o) is the distance from the mirror to the object.




No comments:

Post a Comment