A tungsten wire of unknown composition emits 0. 1 ampere per centimetre square at a temperature of 1900 Kelvin. Find the work function
Answer (1)
9th Dec, 2018
Hi
You can calculate this work function by using
Richardson- dushman equation ,
Consider J=0.1 , A= 60.2 , T= 1900
b=11600*pi ,
Work function
J= A* T^2 * e ^ b/ T
By the above consider values you can calculate the pi value .
Which is the work function .
Answer will be 3.56 eV
Thanks
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