A convex lens has focal length f. An object is located at infinity. The image formed is located
A)
at infinity.
B)
at 2f.
C)
between f and 2f.
D)
at f.
E)
between the lens and f.
D
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Which should have the higher thermal conductivity, a single-crystal gas-turbine blade or a polycrystal turbine blade? _____________
Fill in the blank(s) with the appropriate word(s).
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