What is the maximum possible angular magnification of the converging lens of focal length 5 cm for a person with normal vision?
A) 2 B) 3 C) 4 D) 6 E) 5
D
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A total solar eclipse will be visible from the same location on Earth one saros cycle later
Indicate whether the statement is true or false
The velocity of a body is graphed as a function of time. The slope of the graph at any point may be identified with
A. instantaneous speed. B. average velocity. C. average acceleration. D. instantaneous velocity. E. instantaneous acceleration.
Unpolarized light passes through three ideal polarizing filters
The first filter is oriented with a horizontal transmission axis, the second one has its transmission axis at 30° from the horizontal, and the third filter has a vertical transmission axis. What percent of the light gets through this combination? A) 9.4% B) 91% C) 50% D) 0% E) 33%
Which of the following best characterizes electrical conductors?
a. high tensile strength c. electric charges move freely b. poor heat conductors d. low mass density