Hydrogen Emits Violet Light with a Wavelength of 410 Nm

question 28

Multiple Choice

Hydrogen emits violet light with a wavelength of 410 nm and red light with a wavelength of 656 nm.A parallel beam of hydrogen light is normally incident on a diffraction grating that has 5500 lines per cm.What is the angle between the second order red line and the third order violet line that appear close together?

• A)3.62 degrees
• B)2.58 degrees
• C)4.23 degrees
• D)5.79 degrees
• E)None of these is correct.

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