Compare the values for (a) and (b) above and explain any similarities or differences
What is the name of the mathematical relationship between
,
and
?
Write a conclusion for this part of the investigation.
Drawing Ray Diagrams for Converging Lenses
Ray diagrams are normally drawn using three rays. The three rays are labelled
,
and
. The ray diagrams that follow will use this naming convention.
The first ray (
) travels from the object to the lens
parallel to the principal axis. This ray is bent by the lens and travels through the
focal point .
Any ray travelling parallel to the principal axis is bent through the focal point.
If a light ray passes through a focal point
before it enters the lens, then it will leave the lens
parallel to the principal axis. The second ray (
) is therefore drawn to pass through the focal point before it enters the lens.
A ray that travels through the centre of the lens does not change direction. The third ray (
) is drawn through the centre of the lens.
The point where all three of the rays (
,
and
) intersect is the
image of the point where they all started. The image will form at this point.
In ray diagrams, lenses are drawn like this:
Convex lens:
Concave lens:
CASE 1: Object placed at a distance greater than
From the lens
We can locate the position of the image by drawing our three rays.
travels from the object to the lens parallel to the principal axis, is bent by the lens and then travels through the focal point.
passes through the focal point before it enters the lens and therefore must leave the lens parallel to the principal axis.
travels through the center of the lens and does not change direction. The point where
,
and
intersect is the image of the point where they all started.
The image of an object placed at a distance greater than
from the lens is upside down or
inverted . This is because the rays which began at the top of the object,
above the principal axis, after passing through the lens end up
below the principal axis. The image is called a
real image because it is on the opposite side of the lens to the object and you can trace all the light rays directly from the image back to the object.
The image is also smaller than the object and is located closer to the lens than the object.
In reality, light rays come from
all points along the length of the object. In ray diagrams we only draw three rays (all starting at the top of the object) to keep the diagram clear and simple.
Questions & Answers
Discuss the differences between taste and flavor, including how other sensory inputs contribute to our perception of flavor.
The lymphatic system plays several crucial roles in the human body, functioning as a key component of the immune system and contributing to the maintenance of fluid balance. Its main functions include:
1. Immune Response: The lymphatic system produces and transports lymphocytes, which are a type of
asegid
to transport fluids fats proteins and lymphocytes to the blood stream as lymph
Anatomy is the study of the structure of the body, while physiology is the study of the function of the body. Anatomy looks at the body's organs and systems, while physiology looks at how those organs and systems work together to keep the body functioning.
Enzymes are proteins that help speed up chemical reactions in our bodies. Enzymes are essential for digestion, liver function and much more. Too much or too little of a certain enzyme can cause health problems
Kamara
yes
Prince
how does the stomach protect itself from the damaging effects of HCl
the normal temperature is 37°c or 98.6 °Fahrenheit is important for maintaining the homeostasis in the body
the body regular this temperature through the process called thermoregulation which involves brain skin muscle and other organ working together to maintain stable internal temperature