Q. The roll is and the laser beam is moved along the roll. (Solved)
1. stationary, axially
2. stationary, perpendicularly
3. rotated, axially
4. rotated, perpendicularly
- c. rotated, axially
1. stationary, axially
2. stationary, perpendicularly
3. rotated, axially
4. rotated, perpendicularly