A student constructs an astronomical telescope with a magnification of 10. If the telescope has a converging lens of focal length 50 cm, what is the resulting length of the telescope?
A)
53 cm
B)
55 cm
C)
60 cm
D)
67 cm
E)
75 cm
Question 2
The radius of the n = 3 Bohr orbit in the hydrogen atom is
A)
0.36 nm.
B)
0.60 nm.
C)
0.48 nm.
D)
0.12 nm.
E)
0.24 nm.