Abstract. In this paper, a statistical study of doublet type II radio bursts i.e. first type II (type II₁) and second type II (type II₂) associated with flares and CMEs for solar cycle 23 & 24 is presented. We have considered radio rich CMEs that are accompanied by type-II radio bursts for our analysis. Our study spans a duration of 15 years extending from November 1997 to December 2015, including solar cycles 23 and 24. We have analyzed the key attributes of doublet type II radio bursts by utilizing the data available at Culgoora radio spectrograph. A comparative study of the association of both type II solar radio burts with flares and CMEs for solar cycle 23 & 24 has been undertaken. In solar cycles 23 & 24, the flares start before the start of both two types of radio bursts and CMEs start after the onset of radio bursts which suggests that the solar flare is a precursor to both the radio bursts and the subsequent CME. The flare triggers the acceleration of particles that lead to the radio bursts. CME speed and acceleration are negatively correlated with a correlation coefficient of r = -0.57 and r = -0.72, this suggests that as CME speed increases, deceleration increases in both solar cycles 23 & 24.

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