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For photoelectric experiment, plot of KE_max vs frequency ν is:
ACurve
BParabola
CStraight line with slope h, intercept -φ
DHorizontal
Answer & Solution
Correct answer: C. Straight line with slope h, intercept -φ
KE_max = hν - φ. Linear in ν. Slope = h (Planck constant, universal). Intercept on ν-axis = ν₀ = φ/h (threshold). Different metals: same slope, different intercept.
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