This figure shows that the image of a candle inside the focal point of a concave mirror is virtual, erect, and magnified. Where would the candle's image be if it were placed exactly at the center of curvature, point C?
a. A real inverted image is formed at an infinite distance to the left and infinite in size.
b. A virtual erect image is formed at an infinite distance to the right and infinite in size.
c. The inverted image is formed with the same size as the object, also located at the focal point, but on the opposite size of the optical axis.
c
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The orbits of most comets:
A) are like the planets, fairly circular and in the ecliptic plane. B) lie almost entirely beyond the orbit of Neptune. C) have perihelions within the orbits of Mercury. D) go no farther out than Pluto, then return to the Sun again. E) are shorter than the 76 year period for Comet Halley.
A single slit of width a is illuminated by light of wavelength ?. If a = 4.3?, the maximum number of dark fringes on a semi-circular screen surrounding the slit is
A. 2. B. 4. C. 6. D. 8. E. 9.
Briefly describe how the solar wind affects magnetospheres and how auroras are produced
What will be an ideal response?
A 1000-kg car traveling at 70 m/s takes 3 m to stop under full braking. The same car under similar road conditions, traveling at 140 m/s, takes ______________ m to stop under full braking
a. 6 b. 1 c. 3 d. 12 e. 11