At what position will the image be formed in DIAGRAM 2?
About this question
Question 6.2.1 of Technical Sciences Grade 12 Paper 1, NSC Preparatory Examination (Eastern Cape DoE, September 2025). It tests the Term 2 ATP topic Light Reflection, refraction, and Total Internal Reflection (critical angle).
- TermTerm 2
- ATP topicLight Reflection, refraction, and Total Internal Reflection (critical angle)
- PaperPaper 1
- Marks1 mark
DIAGRAM 1
DIAGRAM 2
Behind the object, on the same side of the lens as the object (between the lens and F).
More Questions On Light Reflection, refraction, and Total Internal Reflection (critical angle)
The object sits exactly at the focal point, so the rays leave the lens parallel to each other. Parallel rays never meet, so no real image forms.
The three characteristics of the image are:
- It is virtual, so it cannot be projected on a screen.
- It is upright, with the same orientation as the object.
- It is magnified, so it is larger than the object.
Two applications of a convex lens are:
- A telescope.
- Binoculars (a magnifying glass or a camera lens is also correct).
C: Diagram C
A concave lens is a diverging lens: parallel rays spread out after passing through it (diagram C).
B: refraction away from the normal.
The angle of incidence is smaller than the critical angle, so there is no total internal reflection. Light moving from a denser to a less dense medium bends away from the normal.