An object is located in front of a converging lens with focal length F as shown. The image can be described as
A. upright, magnified, and real.
B. upright, diminished, and virtual.
C. inverted, diminished, and real.
D. inverted, magnified, and virtual.
C. inverted, diminished, and real.
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When the electrons in an atom are in their lowest possible energy levels, the atom is said to be in its ____________________ state
Fill in the blank(s) with correct word
A body sliding on a table is observed to gradually slow down. The correct statement is that the body slows down because
A. no net force acts on the body. B. no force acts on the body. C. it is the nature of the body to slow down by itself. D. a net force acts on the body.
Parallax is
a. the apparent motion of an object due to the motion of the observer. b. the distance between two foci of an ellipse. c. the small circle that the planets slid along in Ptolemy's geocentric universe. d. the circular orbits used in Copernicus' heliocentric universe. e. half the length of the shortest diameter of an ellipse.
A He-Ne laser, which produces light of wavelength 632.8 nm, is used to calibrate a diffraction grating. If the first-order maximum occurs at 20.5° from the central spot, what is the distance between the slits of the grating?
A) 0.905 µm B) 1.81 µm C) 2.20 µm D) 3.62 µm E) 4.52 µm