MCQ
Work function of a metal is $2.51\ eV.$ Its threshold frequency is
  • A
    $5.9 \times 10^{14}$ cycle/sec
  • B
    $6.5 \times 10^{14}$ cycle / sec
  • C
    $9.4 \times 10^{14}$ cycle / sec
  • $6.08 \times 10^{14}$ cycle / sec

Answer

Correct option: D.
$6.08 \times 10^{14}$ cycle / sec
$6.08 \times 10^{14}$ cycle / sec

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