Question

Light with a wavelength of 145 nm is shined on to the surface of platinum metal....

Light with a wavelength of 145 nm is shined on to the surface of platinum metal. What is the maximum speed of the ejected photoelectrons? The work function of platinum is 6.35 eV.

7.15E5 m/s

6.32E5 m/s

4.35E4 m/s

8.83E5 m/s

0 m/s.

No photoelectrons are ejected.

0 0
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Answer #1

E = d.+ kemer hc 6.35x106x109 * Limi N A 6.631 10 34 43x/03 1458159. 2 6.38x8*6x10) Umar 9. 1x10 31 S V 8.83x10 m/s

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