Page 06 8. The following statement represents a nuclear reaction. Lr Z He 256 4 103 2 → + Nucleus Z is A Md 252 101 B No 252 101 C Md 256 101 D Db 260 105 E Lr 252 103 . 9. Radiation is incident on a clean zinc plate causing photoelectrons to be emitted. The source of radiation is replaced with one emitting radiation of a higher frequency. The irradiance of the radiation incident on the plate remains unchanged. Which row in the table shows the effect of this change on the maximum kinetic energy of a photoelectron and the number of photoelectrons emitted per second? Maximum kinetic energy of a photoelectron Number of photoelectrons emitted per second A no change no change B no change increases C increases no change D increases decreases E decreases increases