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Tier 1:
Which lens/ mirrors has a primary focal point on the left?
Concave lens and convex mirror
Tier 2:
How do you tell whether a virtual image is formed or a real image is formed?
The image is upside down and the size changes if the image is virtual.
Tier 3:
How would you use your knowledge of focal points to determine if an image gets smaller, gets larger, or stays the same if the real object is on the primary focal point in a convex lens?
The image will remain the same size. You know this since the image gets larger if it is in front of the focal point, and smaller if it is behind the focal point, so an average of this on the focal point gives you the same size image.

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What type of lens is shown in the image below?Is the following a reflection off a concave or convex mirror? Calculate the height of the virutal image if the object is 2 feet away and 7 inches tall. The image appears 4 feet away.

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Tier 1: What type is image is formed for a concave, flat, and convex mirror?
Concave mirror: Real and virtual image.
Convex mirror: Virtual image.
Flat mirror: Virtual image
Tier 2: What happens when you change the position of object in relation to the focal length?
You change the size of the real image.
Tier 3: How does the image change when you move the object more than 2 focal lengths, between one and 2 focal lengths, and less than one focal length?
More than 2 focal lengths: Smaller, inverted, and real
Between one and 2 focal lengths: Larger, inverted, and real.
Less than one focal length: Larger, upright, and virtual.

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1) If an object is outside the focal point on a concave mirror, then the image will be be..?
Answer: real and inverted.
2) The bending of light as it travels from one medium to the other is called.....
Answer: Refraction
3)  Which of the following describes a light ray  that passes above the focal point and then is reflected by the mirrors? Answer: is reflected back through the focal point

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Tier 1:
What is the difference between a mirror and a lens?

Tier 2:
Compare and contrast a converging mirror, converging lens, diverging mirror, and diverging lens.

Tier 3:

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Tier 1
1)  What type of lens is a magnifying glass?
Answer: Convex
Tier 2
1)  Compare and contrast a converging mirror, converging lens, diverging mirror, and diverging lens.