I want to find out if my Apple iPad charger is original or fake?

Whilst it is impossible from a photo to give a definitive answer, insofar as your photographs can help, your charger “appears” to have all the correct markings - without obvious errors. Some fakes are better than others.

To be sure that you have genuine components, you should always purchase directly from Apple (online or in-store) or from an Apple Authorised reseller.

This Apple power/charge block looks like the genuine item.

None of the outer markings look different or suspicious, but as LotusPilot has pointed out, some counterfeit Apple products can look identical to the genuine item, in terms of design and markings, so there can be no way to really tell.