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The work function of zinc is 6.8 xx 10^(...

The work function of zinc is `6.8 xx 10^(-19)` J. What is the threshold frequency for emission of photoelectrons for zinc ?
Data: `W = 6.8 xx 10^(-19)`J, `v_(0)` = ?

Text Solution

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Work Function `W=hv_(0)`
`hv_(0) = 6.8 xx 10^(-19)`
`v_(0)=(6.8 xx 10^(-19))/(6.626 xx 10^(-34))`
`v_(0) = 1.026 xx 10^(15) Hz`.
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