If you stand in front of a convex mirror, at the same distance from it as its focal length,
A) you won't see your image because there is none.
B) you won't see your image because it is focused at infinity.
C) you will see your image and you will appear smaller than you.
D) you will see your image and you will appear larger than you.
E) you will see your image and it will be the same size as you except upside down.
C
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What is the maximum radiation pressure exerted by sunlight in space (S = 1350 W/m2) on a highly polished silver surface?
A. 1.4 × 10?2 Pa B. 0.12 Pa C. 9.0 × 10?6 Pa D. 4.5 × 10?5 Pa E. 2.3 × 10?6 Pa
Which of the following statements is true of the nuclear reactions in the Sun?
A) They take place only near the center. B) They take place only near the surface. C) They are entirely endothermic reactions. D) They occur at temperatures less than 100,000 K.
For a nova to occur, the system must have already been a
A) astrometric binary. B) detached binary. C) spectroscopic binary. D) mass-transfer binary. E) eclipsing binary.
How are wavelength, frequency, and energy related for photons of light?
A) Longer wavelength means lower frequency and lower energy. B) Longer wavelength means higher frequency and lower energy. C) Longer wavelength means higher frequency and higher energy. D) Longer wavelength means lower frequency and higher energy. E) There is no simple relationship because different photons travel at different speeds.