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What is threshold frequency? Write down the relation between Work function and threshold frequency. If the threshold frequency of a radiation is 2000 angstrom, then calculate its work function.

2 years ago

Arun
23742 Points

Dear Nayan
You have typed a wrong thing as unut of frequency can't ne angstroms.
So it us not clear whether it is frequency or wavelength.

Now
Threshold frequency is defined as the minimum frequency of incident light which can cause photo electric emission i.e. this frequency is just able to eject electrons with out giving them additional energy. It is denoted by . WORK FUNCTION

Work function W = h $\huge \nu$0
Where , $\huge \nu$0 =threshold frequency

Regards
2 years ago
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