Question

Which observation provided Albert Einstein the clue that he needed to explain the photoelectric effect? Light is made up of extremely small particles. Particles that are emitted from a strip of metal are electrons. Shining light on a metal strip produces emissions. Energy of electrons depends on light’s frequency, not intensity.

Answer 1

Energy of electrons depends on light's frequency not intensity is the correct option.

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Answer 2

The correct answer is

Energy of electrons depends on light’s frequency, not intensity.

As per photoelectric effect, if we incident a light on metal surface it will results into emission of electron from it

if we increase the number of photons the number of electrons will increase however if we increase the frequency the number of photons will not increase

While if we increase frequency the energy of electrons will increase as

Energy of photon = Work function of metal + kinetic energy of electrons