Write your answers as T or F on the answer page. Any answers NOT recorded on the
ID: 1618499 • Letter: W
Question
Write your answers as T or F on the answer page. Any answers NOT recorded on the answer page will NOT be counted. Light is an electromagnetic wave that is longitudinal. T) True or F) False A convex mirror can be used to produce both real and virtual images. T) True or F) False If a spherical mirror has a positive focal length, it must concave. T) True or F) False The image produced by a spherical lens has a magnification +1.5, so the image must be real. T) True or F) False The equation: n_1sintheta_1 = n_2sintheta_2, is known as Brewster's Law. T) True or F) False In the diagram, the large arrow represents an object and the small arrow is the center of curvature of the mirror. This arrangement will produce an erect image to the right of the mirror that is and larger than the object. T) True or F) False The image produced by a magnifying glass is vertual. T) True or F) False Indexes of refraction are always greater than one! T) True or F) FalseExplanation / Answer
1) False
Reason: Light is an electromagntic wave that is transverse wave but not longitudinal
2) False
Reason: Convex mirrors only produce real images.
3) True
Reason: Because for a concave mirror focal length is positive and for a convex mirror focal length is negaitve. Therefore a spherical mirror with a positive focal length will be a concave mirror.
4)
Positive magnification means the image is upright
5) False
Reason: The given law is called Snell's Law
6) image is missing
7) True
Reason: The image produced by a maginfication glass is virtual
8) True
Reason:
n = c/v
where:
c is speed of light in vacuum
v is speed of light in medium
We know that speed of light in vacuum is always greater than spped of light in any medium which implies that the values of c/v will always be greater than 1
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