Cracking the SAT Physics Subject Test
the higher index of refraction and strikes a boundary beyond which the index of refraction is lower (and if the angle of inciden ...
MIRRORS A mirror is an optical device that forms an image by reflecting light. We’ve all looked into a mirror and seen images of ...
(2) Is the image real or is it virtual? (3) Is the image upright or is it inverted? (4) What is the height of the image (compare ...
The center of this imaginary sphere is the mirror’s center of curvature, and the radius of the sphere is called the mirror’s rad ...
nearly identical. The previous two figures illustrate a concave mirror, a mirror whose reflective side is caved in toward the ce ...
The figure below shows a concave mirror and an object (the bold arrow). Use a ray diagram to locate the image of the object. ...
Mirror and Lens Drawings You will not be asked to draw out anything on the test, but you will need to be able to figure out wher ...
The figure below shows a convex mirror and an object (the arrow). Use a ray diagram to locate the image of the object. ...
Here’s How to Crack It ...
The ray diagrams of the preceding examples can be used to determine the location, orientation, and size of the image. The nature ...
Be Positive We will always treat the object’s position as being the positive side. For mirrors, if the image is produced on the ...
negative, it’s inverted. Because so is always positive, we can come to two conclusions: If si is positive, then m is negative, s ...
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The Skinny on Mirrors +si = −m = inverted image = real image −si = +m = upright image = virtual image Concave mirrors produce bo ...
The magnification is (The fact that the magnification is negative confirms that the image is inverted, as we said in Question ...
Because si is negative, the image is virtual. Virtual images are upright. The magnification is: (The fact that the magnificati ...
What Produces What? Only concave mirrors can produce real images (if s 0 ≻ f). Convex mirrors and plane mirrors can only produce ...
since convex mirrors form only virtual images. The mirror is concave. With so = 60 cm and si = 30 cm (si is positive since the ...
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THIN LENSES A lens is an optical device that forms an image by refracting light. We’ll now talk about the equations and conventi ...
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