Please help me with units or round off error! Thank you Electrons are ejected fr

Question

Please help me with units or round off error! Thank you

Electrons are ejected from a metallic surface with speeds ranging up to 4.4 times 10^5 m/s when light with a wavelength of lambda = 600 nm is used, What is the work function of the surface? What is the cutoff frequency for this surface? Your response is within 10% of the correct value. This may be due to round off error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize round off error. Hz

Explanation / Answer

hfo = Wo

fo= Wo/h

fo= 1.492 ev/ (4.136 x 10-15 eV)

fo= 3.6 x 1014 Hz

The cut off frequency is 3.6 x 1014 Hz

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