Make 4.1.2 short and easy to be memorable

4.1.1)
The photoelectric effect indicates the particle nature of light. This means that light energy comes in separate, individual packets (like tiny, distinct bundles) called photons, rather than a continuous stream.

4.1.2)
The maximum speed of the ejected electrons will REMAIN THE SAME.
Reason: More intense light means more photons, which ejects more electrons. But each photon still has the same energy (because frequency is unchanged), so each electron gets the same maximum speed.