A compound microscope has a 18-cm-long barrel and an objective lens with a focal length of 8.0 mm.
What is the focal length of the eyepiece to give a total magnification of 240? It is adjusted for minimum eyestrain for persons with a near point of 25 cm. A) 1.3 m
B) 1.5 cm
C) 1.9 cm
D) 2.1 cm
E) 2.3 cm
Question 2
If you stand in front of a convex mirror, at the same distance from it as its radius of curvature,
A) you will see your image and it will be the same size as you except upside down.
B) you won't see your image because it is focused at infinity.
C) you will see your image and you will appear larger than you.
D) you will see your image and you will appear smaller than you.
E) you won't see your image because there is none.
A 19-foot-long blue whale skull in the collections of the Smithsonian Museum of Natural History
Lens of eye
Varieties of Long-Term Memory
Beaker with ibex, dogs, and long-necked birds, from southwest Iran.
Long-term Potentiation in the granule cell layer of the rat hippocampal dentate gyrus. (Traces ...
A very thin uniform rod, 2.40 m long and of weight 135 N, has a frictionless hinge at its lower ...