The objective lens of a microscope has a focal length of 2.4 mm and the eyepiece has an angular magnification of 15
The object is positioned 0.060 mm beyond the focal point of the objective. The focal point of the eyepiece is positioned at the real image formed by the objective. The near point of the microscope user is at 25 cm. The magnitude of the overall magnification of the microscope is closest to
A) 400.
B) 450.
C) 500.
D) 550.
E) 600.
E
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The focal lengths of the objective and the eyepiece in a microscope are 0.290 cm and 2.50 cm, respectively. An object is placed 0.300 cm from the objective
The image of this object is viewed with the eyepiece adjusted for minimum eyestrain (image at the far point of the eye) for a person with normal vision. What is the distance between the objective and the eyepiece? A) 9.85 cm B) 10.1 cm C) 10.4 cm D) 11.2 cm E) 11.5 cm
The only metal that does not react with oxygen under ambient conditions is _________.
Fill in the blank(s) with the appropriate word(s).
Given that a large sunspot, about 100× smaller than the Sun, is about the same size as our planet, how many Earths could fit inside the Sun's vast volume?
A) 100 B) 1,000 C) 10,000 D) 100,000 E) one million
Earth's spin creates the day and night cycle, but does not affect the weather pattern.
Answer the following statement true (T) or false (F)