The properties of some rare earth elements make them essential ingredients in electronics. Rare earth elements appear together i
n the same general area of the periodic table of the elements. The graph shows two properties of several rare earth elements.
Is it accurate to say that the rare earth elements, as a group, share the same properties? Support your answer using the information in the graph.
Is it accurate to say that the rare earth elements, as a group, share the same properties? Support your answer using the information in the graph.
2 answers:
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Answer:
Magnification, m = -0.42
Explanation:
It is given that,
Height of diamond ring, h = 1.5 cm
Object distance, u = -20 cm
Radius of curvature of concave mirror, R = 30 cm
Focal length of mirror, f = R/2 = -15 cm (focal length is negative for concave mirror)
Using mirror's formula :
, f = focal length of the mirror
v = -8.57 cm
The magnification of a mirror is given by,
m = -0.42
So, the magnification of the concave mirror is 0.42. Thew negative sign shows that the image is inverted.