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8.1 Define the term dispersion - NSC Technical Sciences - Question 8 - 2020 - Paper 2
Question 8
8.1 Define the term dispersion. 8.2 Name any FOUR colours in visible light. 8.3 State THREE properties of the image formed in a plane mirror. 8.4 Redraw the diagr... show full transcript
Worked Solution & Example Answer:8.1 Define the term dispersion - NSC Technical Sciences - Question 8 - 2020 - Paper 2
Step 1
Step 2
Step 3
State THREE properties of the image formed in a plane mirror.
Answer
The properties of the image formed in a plane mirror include:
- The image is always virtual, meaning it cannot be projected on a screen.
- The image is erect/upright, appearing in the same orientation as the object.
- The image is laterally inverted, meaning it is reversed from left to right.
Step 4
Redraw the diagrams below in the ANSWER BOOK and complete EACH to show the path of the ray after passing through the lens (8.4.1).
Answer
For diagram 8.4.1:
- Draw the incoming ray parallel to the principal axis, heading towards the lens.
- Mark the focal points on both sides of the lens, labeled F1 and F2.
- The ray should continue straight through the optical center of the lens, without deviation.
Step 5
Redraw the diagrams below in the ANSWER BOOK and complete EACH to show the path of the ray after passing through the lens (8.4.2).
Answer
For diagram 8.4.2:
- Draw the incoming ray parallel to the principal axis, on the left side of the lens.
- This ray will refract towards the focal point F2 on the right side after passing through the lens.
Step 6
Redraw the diagrams below in the ANSWER BOOK and complete EACH to show the path of the ray after passing through the lens (8.4.3).
Answer
For diagram 8.4.3:
- Begin with the incoming ray parallel to the principal axis, approaching the lens.
- The ray will refract and spread out as it passes through the lens, diverging from the focal point F, which is on the same side of the lens as the incoming ray.