passing array to command line argument.

[Dolphin06]

Hello i would like to pass an array to my script command line argument, but
only the first element of the array is displayed.  Here is my process :

script1:
my_array=(el1 el2 el3)
script2 -f $my_array

script2:
while getopts ":f:" opt ; do
 case $opt in
  f ) arr="$OPTARG" ;;
 esac
done

echo "arr : ${arr[@]}"
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