The work function for tungsten and sodium are `4.5 eV` and `2.3 eV` respectively . If the threshold wavelength `lambda` for sodium is `5460 Å`, the value of `lambda` for tungsten is
A
` 5893 Å`
B
`10683 Å`
C
`2791 Å `
D
`528 Å `
Text Solution
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The correct Answer is:
C
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