Two parallel rays (also parallel to the optic axis) reflect from a concave mirror. They intersect at
A) the center of curvature.
B) the focal point.
C) a point behind the mirror.
D) infinity.
B
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Galileo observed satellites orbiting which planet as indirect confirmation of Earth's non-uniqueness?
What will be an ideal response?
The order of evolutionary stages of a star like the Sun would be Main Sequence, giant, planetary nebula, and finally:
A) hypernova. B) neutron star. C) white dwarf. D) nova. E) black hole.
Einstein earned the Nobel Prize for his
A) special theory of relativity. B) general theory of relativity. C) development of the equivalence of energy and matter, E = mc2. D) work on the particle nature of light. E) contributions to the development of the fission bomb.
Light of wavelength 580 nm is incident on a slit of width 0.30 mm. An observing screen is placed 2.0 m past the slit. Find the distance on the screen of the first order dark fringe from the center of the pattern
A) 0.26 mm B) 1.5 mm C) 1.9 mm D) 3.9 mm E) 7.7 mm