then which of the following statement is correct?

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Threshold frequency for a metal is 10^15 Hz. If the light of wavelength 4000 Å falls on its surface, then which of the following statement is correct?
27
Nov
Threshold frequency for a metal is 10^15 Hz. If the light of wavelength 4000 Å falls on its surface, then which of the following statement is correct? then which of the following statement is correct? Threshold frequency for a metal is 10^15 Hz. If the light of wavelength 4000 Å falls on its surface November [...]
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