Given results are observed when sodium metal is irradiated with different wavelengths. Calculate (a) threshold wavelength and, (b) Planck's constant. λ(nm)500 450 400 V X 10⁻⁵ (cm s⁻¹)2.55 4.35 5.35
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Calculate (a) threshold wavelength and (b) Plancks constant. lambda (nm) ... λ(nm), 500, 450, 400. v×10−5(cms−1), 2.55, 4.35, 5.35 ...
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Let the threshold wavelength be lambda 0 nm or lambda 0 × 10^-9 m. h(ν - ν0) = 1/2mv^2 hc (1/lambda - 1/lambda0) = 1/2mv^2 hc (1/500 × 10^-9 - 1/lambda0 .
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