The value of current gain α of a transistor is 0.98. The value of β will be

Current gains are given by α=ΔiCΔiE   and  β=ΔiCΔiB  where ΔiC , ΔiE , ΔiB are change in collector current, emitter current and base current, respectively. The relation between α   and  β isβ=α1−α  Given,  β=0.98,  hence  we  haveβ=0.981−0.98=49