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Achievements of Pan-Africanism were;It promoted a forum for black people to voice their grievances/discuss their internal/external affairs.It natured the spirit of solidarity among the black people.It encouraged corporation among African leaders and states towards decolonizationIt laid the foundation for the interest in research on African culture,/history/music/religion.It laid the foundation for establishment of the O.A.U in 1963.It was a step towards the restoration of the status and dignity of African people.It created awareness among the black people about the common experiences/suffering and promoted native nationalism/struggle for independence in colonized Africa.
Photo-electric effect is the emission of electrons from the surface of a solid when illuminated with electromagnetic radiation of sufficient frequency.
Founders of Pan-Africanism include;Booker T. WashingtonGeorge PadmoreMarcus GarveyN.E.B Bois
Threshold frequency is the minimum frequency needed by a radiation to dislodge an electron from a given surface.
Isotopes are atoms of the same element with the same atomic number but different mass number.