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Author Question: A photocathode whose work function is 2.5 eV is illuminated with white light that has a continuous ... (Read 53 times)

melina_rosy

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on: Jul 29, 2018
A photocathode whose work function is 2.5 eV is illuminated with white light that has a continuous wavelength band from 360 nm to 700 nm. The stopping potential for this white light illumination is closest to:
 
  A) 0.94 V
  B) 0.85 V
  C) 1.0 V
  D) 1.1 V
  E) 1.2 V

Question 2

The power rating of a 400- resistor is 0.800 W. (a) What is the maximum voltage that can be applied across this resistor without damaging it? (b) What is the maximum current this resistor can draw without damaging it?
 
  What will be an ideal response?


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JYan

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Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

(a) 17.9 V (b) 44.7 mA


melina_rosy

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Reply 2 on: Jul 29, 2018
Gracias!

sultansheikh

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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