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CBSE Class 12-science Answered

the threshold frequency for photoelectric effect for a metal surface is found to be 4.8 x 10^16 hz . the stopping potential required when the metal is iradicated by radiation of frequency 5.6x10^16 hz is 
Asked by Atulcaald | 31 May, 2018, 09:32: PM
answered-by-expert Expert Answer
Equation releted to stopping potential V is given by
 
begin mathsize 12px style e V space equals space h cross times open parentheses nu space minus space nu subscript t h end subscript close parentheses end style
where ν and νth are frequency of radiation and threshold frequency respectively. h is plancks constant.
 
hence stopping potential V = begin mathsize 12px style fraction numerator 6.626 cross times 10 to the power of negative 34 end exponent over denominator 1.602 cross times 10 to the power of negative 19 end exponent end fraction cross times open parentheses 5.6 minus 4.8 close parentheses cross times 10 to the power of 16 space equals space 33 space V end style
Answered by Thiyagarajan K | 08 Jun, 2018, 04:42: PM

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