Références croisées dans un document LaTeX

\documentclass[12pt,a4paper]{article}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage{makeidx}
\usepackage{graphicx}
\usepackage{lmodern}
\usepackage{kpfonts}
\usepackage[left=2cm,right=2cm,top=2cm,bottom=2cm]{geometry}

\usepackage{hyperref}

\begin{document}

When I click on the link of a reference (equation, image, section...) it
sends me to the beginning of the page where the reference is and not to 
its exact location. how do I get the link to send me to the exact 
location of the reference?

 \begin{equation}
 B=A+C
 \label{eq1}
 \end{equation}

 \newpage
 This is the link to the equation \ref{eq1}

 \end{document}