Question 1
What is the wavelength of radiation that has a frequency of 5.39 × 10
14 s
–1? (c = 2.9979 × 10
8 m/s)
◦ 1.80 × 10
–3 nm
◦ 556 nm
◦ 618 nm
◦ 6180 nm
◦ 1.61 × 10
23 nm
Question 2
When photons with a wavelength of 310. nm strike a magnesium plate, the maximum velocity of the ejected electrons is 3.45 × 10
5 m/s. Calculate the binding energy of electrons to the magnesium surface.
◦ 32.7 kJ/mol
◦ 321 kJ/mol
◦ 353 kJ/mol
◦ 386 kJ/mol
◦ 419 kJ/mol