A person with a near point of 25 cm uses a magnifying lens having a focal length of 10 cm. What is the angular magnification of this lens if the person's eyes are focused at his near point?
A) 2.5 B) 4.5 C) 3.5 D) 1.5
C
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An object is moving with constant non-zero velocity in the +x-axis. The velocity versus time graph of this object is
A) a horizontal straight line. B) a vertical straight line. C) a straight line making an angle with the time axis. D) a parabolic curve. E) a hyperbolic curve.
How do high mass stars transport newly formed elements into the interstellar medium?
A) supernova explosions B) stellar winds C) formation of planetary nebula D) A and B E) A and C
Electric generating plants are usually rated in "megawatts". This is a unit of
A) force. B) power. C) energy. D) both energy and work. E) work.
In defining a disease to be studied, epidemiologists use the term disease broadly, but ________________ is a more accurate but cumbersome description of what is to be studied.
What will be an ideal response?