Light of wavelength, λ, strikes a metal surface with intensity X and the metal emits Y electrons per second of maximum kinetic energy Z. What will happen to Y and Z if X is halved?

Question

Prashant Kotian · Accepted Answer

Correct answer: C. Intensity determines number of photons (and hence Y). Halving X halves Y. Wavelength (unchanged) determines Z, so Z remains constant.

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