The graph of stopping potential V versus 1/λ is shown for three metals with work functions φ₁, φ₂ and φ₃. Select the correct statements. Image
Select all that apply

Question

The graph of stopping potential V versus 1/λ is shown for three metals with work functions φ₁, φ₂ and φ₃. Select the correct statements. Image

G1 Physics · Accepted Answer

Step 1: Use Eγ = hν = hc/λ and Kₘₐₓ = hν−φ = eVₛ. Step 2: Apply the threshold condition Kₘₐₓ = 0 where required and use the given photon energy/frequency. Final: A: φ₁ : φ₂ : φ₃ = 1 : 2 : 4; C: tanθ is directly proportional to hc/e.