Q. A radiographic sensitivity level of 2-2T means that: (Solved)
1. The #2 hole in a #2 penetrameter must be visible on the film
2. The 2T hole in a penetrameter which is 2% of the test piece thickness must be visible on the film
3. The 2T hole in a #2 penetrameter must be visible on the film
4. Two penetrameters which are each 2% of the test piece thickness must be used
- b. The 2T hole in a penetrameter which is 2% of the test piece thickness must be visible on the film