Question

If you want to get 500 times strong current density in metal's thermionic emission, which of...

If you want to get 500 times strong current density in metal's thermionic emission, which of the followings are correct action?

1. use metal which has 1/10 work function

2. Double Temperature

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Answer #1

Both are correct action because on increasing temperature current density increase and also on decreasing work function current density inc

you will understand it better with Richardson's law.

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