1. The line NO that is perpendicular to the plane mirror surface and drawn at the point of incidence is called the _______.   incident ray   normal   reflected ray   Hint Half-n-half Clue   2. The angle of incidence is given by the angle _______.   PON   QOB   AOP   NOQ   Half-n-half Clue   3. The line OQ is called the _______.   normal   reflected ray   incident ray   Half-n-half Clue   4. The line PO is called the _______.   incident ray   reflected ray   normal   Half-n-half Clue   5. The angle of reflection is given by the angle _______.   QOB   AOP   NOQ   PON   Half-n-half Clue   6. The angle between the incident and reflected rays is 90o. If the plane mirror is rotated by 10o about O in the anti-clockwise direction, then the angle between the incident and reflected rays will be _______o.   110   70   90   80   100   Half-n-half Clue   7. The angle between the incident and reflected rays is 90o. If the plane mirror is rotated by 10o about O in the clockwise direction, then the angle between the incident and reflected rays will be _______o.   90   100   70   80   110   Half-n-half Clue