[" 5.Which of the following statements given below are "],[" false? "],[" a.Becquerel discovered radioactivity "],[" b.Fraunhoffer lines were first discovered by "],[" Wollaston "],[" c.Photoelectric effect was discovered by Einstein "],[[" (1) "a,b&c," (2) "a&c],[" (3) "b&c," (4) "c" only "]]