\documentclass{beamer}
% \usetheme{CambridgeUS}
\usetheme{Boadilla}

\title{SEC - Document Preparation and Presentation}
\author{Rakshit}
\institute{Hansraj College, Delhi of University}
\logo{\includegraphics[height=2cm]{overleaf-logo.png}}

\begin{document}

\begin{frame}
\titlepage
\end{frame}

\begin{frame}{Table of Contents}
\tableofcontents
\end{frame}

\begin{frame}{First Section}
\section{First Section}
\begin{itemize}
 \item<1-> Text visible on slide 1
 \item<2-> Text visible on slide 2
 \item<3> Text visible on slide 3
 \item<4-> Text visible on slide 4
\end{itemize}
\end{frame}

\section{Second Section}
\begin{frame}{Second Section}
\end{frame}


\end{document}