Try this:
SqlCommand cmd = new SqlCommand("Select column from tablename", con);
SqlDataReader dr = cmd.ExecuteReader();
dr.Read();
string value = dr[0].ToString();
dr.Close();
if (value == "Doesn't Matter")
{
rdophysicalstatus1.SelectedIndex = 0;
}
Else if (value == "Normal")
{
rdophysicalstatus1.SelectedIndex = 1;
}