MEDIUMMCQ SINGLEJEE Mains ChemistryPhysical ChemistryAtomic StructureIntro
[NEET 2013] Planck's constant h = 6.63 × 10⁻³⁴ Js. Speed of light c = 3 × 10¹⁷ nm/s. Which value is closest to the wavelength (in nm) of a quantum of light with frequency 6 × 10¹⁵ s⁻¹?
0.10
1.25
2.50
3.75
Explanation
λ = c/ν = (3 × 10¹⁷ nm/s) / (6 × 10¹⁵ s⁻¹) = 50 nm
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