Pupil sheet · Reflection in mirrors
Reflection in mirrors — return questions
Name ______________________ Date ____________
Use one to two weeks after the lessons. Keep the notes and the lesson closed.
1. define / state / determine
(a) Define the angle of reflection. (b) State the law of reflection. (c) Supplement. A laser beam reflects off a plane mirror. The incident beam and the reflected beam are 64° apart. Determine the angle between the incident beam and the surface of the mirror.
(a) The angle of reflection
(b) The law of reflection
(c) Supplement: the angle between the incident beam and the mirror
2. explain / determine
(a) A pupil says: “My image is on the surface of the mirror, so it is as far from me as the mirror is.” Explain why this is incorrect. (b) Supplement. On a scale drawing, a point object O is 2.5 cm in front of a plane mirror. The ray from O that reaches an eye hits the mirror 0.7 cm to the right of the normal through O. The eye is 5.0 cm in front of the mirror. Determine how far to the right of the normal through O the eye is.
(a) Why the statement is incorrect
(b) Supplement: the position of the eye