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2 cards from this section. Quick, good the night before a test.
What does the pole of a spherical mirror represent?
Think about the reference point in the mirror.
What are the measurements of heights taken regarding the principal axis?
Remember the direction of measurement!
In the sign convention, distances measured in the direction of incident light are considered:
Think about the direction of movement.
True or False: The focal length of a convex lens is negative.
Recall the classification of lenses.
An object is placed at -15 cm in front of a concave mirror with a radius of curvature of 30 cm. Determine the image distance and state whether the image is real or virtual.
Remember the signs for concave mirrors!
If a convex lens has a focal length of +20 cm and an object is placed at -40 cm, what would be the image distance?
Use the signs correctly in your calculations.
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