Compound Microscope: The objective lens and the eyepiece of a microscope have focal lengths of 4.0 mm and 25 mm, respectively. The objective produces a real image 30 times the size of the object, with the final image viewed at infinity. The near point of the microscope user is at 25 cm. What is the magnitude of the overall magnification of the microscope?
A. 250
B. 300
C. 350
D. 400
E. 450
Answer: B
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Shallow-sloped shield volcanoes are made from lava that
A) is as runny as liquid water. B) has a medium viscosity. C) has a high viscosity. D) can have any viscosity.
According to one of the assumptions of the Bohr Model, the electron in a hydrogen atom moves in an elliptical orbit about the nucleus
Indicate whether the statement is true or false
Spherical Mirrors: Which statements about images are correct? (There could be more than one correct choice.)
A. A virtual image cannot be formed on a screen. B. A virtual image cannot be viewed by the unaided eye. C. A virtual image cannot be photographed. D. A real image must be erect. E. Mirrors always produce real images because they reflect light.
You can see your image in a mirror because of
a. interference. b. diffraction. c. specular reflection. d. diffuse reflection. e. polarization.