Practice Problems Atomic Energy Levels and Double Slit Interference

Directions: On this worksheet you will examine excitation, de-excitation, and a review of the properties of double slit interference.

 Question 1  How much energy (in eV) would a ground state electron, E = -16 eV, acquire when it absorbs a 420 nm photon? 3.38 x 100 eV2.96 x 100 eV7.58 x 100 eV1.14 x 100 eV
 Question 2  As a consequence of absorbing this 420 nm photon, what would be the energy associated with the electron's new exctied state? -1.9 x 101 eV-1.49 x 101 eV-1.3 x 101 eV-1.26 x 101 eV
 Question 3  The excited atom subsequently emits visible light at both 420 nm and 636 nm. What additional energy level should be added to your energy level diagram to accommodate this data? -1.4 x 101 eV1.95 x 100 eV-1.1 x 101 eV-1.01 x 100 eV-1.52 x 101 eV
 Question 4  At which other wavelength outside the visible range do these atoms emit radiation after they are excited by the 420 nm light? 8.26 x 103 nm1.24 x 103 nm4.59 x 103 nm4.14 x 103 nm
 Question 5  Two parallel slits 3.25 x 10-6 m apart are illuminated by plane waves of monochromatic light, and it is found that the 5th bright fringe is at an angle of 2.02º. Determine the wavelength of the light. 3.2 x 10-42.55 x 10-8none of the above2.29 x 10-83.28 x 10-5
Question 6  Which order correctly represents the transformation in a double slit interference pattern as the distance between the slits is increased?