When radiation of frequency 2ν₀ ejects electrons with maximum speed v₁, what is the ratio v₁: v₂ if frequency is raised to 5ν₀?
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When radiation of frequency 2ν₀ ejects electrons with maximum speed v₁, what is the ratio v₁:v₂ if frequency is raised to 5ν₀?

G1 Physics · Accepted Answer

K₁ = h(2ν₀ − ν₀) = hν₀ and K₂ = h(5ν₀ − ν₀) = 4hν₀. Since v ∝ √K, v₁/v₂ = √(1/4) = 1/2. Answer: C.