The Paschen series of hydrogen corresponds to electron transitions from higher levels to n = 3 . What is the longest wavelength in that series? (h = 6.63 × 10^-34 J×s. The ground state of hydrogen is at –13.6 eV.)
a. 822 nm
c. 1880 nm
b. 365 nm
d. 1094 nm
C
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In the two-slit experiment, monochromatic light of wavelength 600 nm passes through a pair of slits separated by 2.20 × 10-5 m. What is the angle corresponding to the second dark fringe?
A) 4.70° B) 3.51° C) 3.94° D) 1.17° E) 2.35°
During a total lunar eclipse, which of the following are true? I. The photosphere of the sun is obscured by the moon. II. The moon is in Earth's umbra. III. The moon is new. IV. The moon is full
a. I, III b. II, IV c. I, II, III d. II, III e. I, II, III, IV
Earth's rotation axis traces out a cone shape in the sky, precessing in the ___________________ direction
Fill in the blank(s) with correct word
Spring tides occur ____
a. only during spring months b. when high tides are unusually low and low tides are unusually high c. when high tides and low tides are unusually low d. when high tides are unusually high and low tides are unusually low e. simultaneously with neap tides