Chemistry: Matter and Change

Section 1: Light and Quantized Energy

Self Check Quizzes

1
The wavelength of a wave is measured from

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A)crest to crest
B)crest to trough
C)origin to crest
D)origin to trough
2
What is the wavelength of a radio wave having a frequency of 3.75 x 107 Hz?

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A).08 m
B)0.8 m
C)8.0 m
D)80 m
3
Which of the following power sources makes use of the photoelectric effect?
A)solar power cells
B)nuclear power plants
C)alkaline batteries
D)diesel engines
4
What is the energy of a single photon of light from hydrogen's 656 nm emission? Use h=6.626 x 10-34 Js and c=3.00 x 108m/s.

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A)1.30 x 10-31 J
B)1.45 x 10-48 J
C)3.30 x 1018 J
D)3.03 x 10-19 J
5
Which of the following electromagnetic waves has photons of the highest energy?

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A)microwaves
B)infrared
C)x-rays
D)ultraviolet
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