Get the Gizmo ready: -25
Activity C:
Magnification
. Check that the Concave mirror is selected
• Move the light bulb to -15 and the focal point to -10.
Introduction: Mirrors are often used to change the size of an image. The magnification of an
image is equal to the ratio of the image height to the object height. Some mirrors, such as the
mirrors in reflecting telescopes, produce images that are greatly magnified. Other mirrors, such
as the mirrors in side-view mirrors on cars, produce images that are reduced in size.
Question: What determines the magnification of an image?
1. Measure: What are the current values of these variables?
do -
f =
di =

plasma is the state of matter where the substance is ionized and has no definite shape or volume. the fact of being ionized makes the substance a good electrical conductor.

c. electrical charges of ionic bonds.

answer is: nuclear fusion produces elements that are heavier than helium.

nuclei combine to form a heavier nucleus, releasing energy.  

for example, fusion of hydrogen atoms at the sun.  

this fusion nuclear reaction is in the inner core of the sun and hydrogen (atomic number 1) is conveted into helium (atomic number 2).  

the inner core is the central region of the sun and all solar energy is produced in the core by nuclear fusion.