Question

1. When various sources of light are shined on a sheet of metal the cutoff frequency is found to be 6.2x10¹⁴ Hz.

What is the work function of the metal?

A.) 3.16 eV

B.) 1.28 eV

C.) 2.23 eV

D.) 2.57 eV

2. What would the deBroglie wavelength be of a baseball of mass 0.15 kg traveling at 50 m/s? Remember to use the Joules version of plancks constant.

A.) 2.53x10¹⁶ m

B.) 8.84x10^-35 m

C.) 5.42x10^-15 m

D.) 1.13x10³⁴ m

Answer 1