Apple Interview Question

1.Explain the different types of thread making process? 2. Questions on Gage R&R 3. Questions on how to measure Flatness 4.Why do you want to work for Apple? 5. Why consumer electronics? 6. Questions on capability studies? 7.If you have a two balls weighing the same , (one solid and a hollow one) how will you differentiate which one is solid and which one is hollow? 8. what is luminescence?