The distance between the object and the eyepiece of a compound microscope is 25 cm. The focal length of its objective lens is 0.20 cm and the eyepiece has a focal length of 2.6 cm. A person with a near point 25 cm is using the microscope
What is the largest angular magnification obtainable using the eyepiece alone as a magnifying lens? A) 6.5
B) 7.6
C) 8.6
D) 9.6
E) 10.6
E
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Saturn's cloud surface appears more uniform than Jupiter's because
A) there is a thick outer cloud covering of water ice overlying the colorful ices. B) due to Saturn's lower gravity, the colorful cloud layers escaped. C) it is composed of completely different gases than Jupiter's. D) the cloud layers are thicker, allowing fewer holes to see the colorful layers. E) due to Saturn's greater distance from the Sun, the colorful cloud layers are just not visible.
How did Mercury's chaotic terrain form?
A. Tidal stresses from Mercury's elliptical orbit have wrinkled that part of the surface. B. A hot spot in Mercury's crust generated earthquakes, which jumbled the surface material. C. Many impacts in that region created the feature, and it was never smoothed over by lava flows. D. Earthquake waves from the impact that formed Caloris Basin heaved up the rock in this region.
Interference effects observed in the early 1800s were instrumental in supporting a concept of the existence of which property of light?
a. electromagnetic character c. wave nature b. particle nature d. polarization
When a ball increases in speed by the same amount each second, its acceleration
A) also increases each second. B) decreases each second. C) is constant. D) varies.