A compound microscope is made with an objective lens ( = 0.90 cm) and an eyepiece ( = 1.1 cm). The lenses are separated by a distance of 10 cm. If an object is 1.0 cm in front of the objective lens, where will the final image of the eyepiece be located?
a. ?30
b. ?15
c. ?23
d. ?11
e. ?9
d
Physics & Space Science
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The Hertzprung—Russell diagram is a plot of
A) radial velocity against distance B) apparent brightness against time C) luminosity against distance D) luminosity against surface temperature
Physics & Space Science
If 25 kg of ice at 0°C is combined with 4 kg of steam at 100°C, what will be the final equilibrium temperature (in °C) of the system?
a. 40 b. 20 c. 60 d. 100 e. 8
Physics & Space Science
When astronomers use Hubble's law to measure the distance to a galaxy they have to measure the ________ of the galaxy.
A. mass B. recessional speed C. rotational speed D. luminosity
Physics & Space Science
The apparent angular shift of any object across a distant background, when viewed from two different places, is called ________ shift
Fill in the blank(s) with correct word
Physics & Space Science