When a metal surface is illuminated by light of wavelengths 400 nm and 250 nm , the…
Physics · JEE Advanced · NTA Exams — Atoms and Nuclei
When a metal surface is illuminated by light of wavelengths 400 nm and 250 nm, the maximum velocities of the photoelectrons ejected are ν and 2ν respectively. The work function of the metal is (h = Planck’s constant, c = velocity of light in air)
- 2 hc × 106 J
- 1.5 hc × 106 J
- hc × 106 J
- 0.5 hc × 106 J
Answer
(A) 2 hc × 10 6 J
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