Lesson plans in science 10 - lessonguide (images in lenses)
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Transcript of Lesson plans in science 10 - lessonguide (images in lenses)
“YOU CAN BE MAGNIFIED”Images formed in Convex Lens
Objectives:1. Measure the focal length and linear magnification of a
convex lens.2. Locate the image formed by convex lens.3. Describe the image formed by convex lens.
*Terms to be remembered:1. Focal Length – is the distance from the surface of a
lens to the focus. It is also known a the distance from the lens at which light rays are concentrated at a single point/dot.
2. Linear magnification – is the visual measure of the object’s image size when viewed using the lens.
3. Virtual image – object’s image is located behind the lens.
4. Real image – object’s image is located in front of the lens.
How light behaves…
REFLECTION REFRACTION
REFRACTION OF LIGHT…*It is described as…- ability of light rays to enter/pass a certain medium like glass.
*Light…- bends to a certain direction.
*Happens only in… - it strikes a clear/transparent medium.
BEST EXAMPLE OF MEDIUM WHERE LIGHT CAN PASS THROUGH ARE GLASSES.
These includes… LENSES
CONVEX
CONCAVE
LENSES ARE USED IN OPTICAL INSTRUMENTS
DID YOU HAVE ANY PAST PERSONAL EXPERIENCES ON USING LENSES SPECIFICALLY
“CONVEX LENS”
HOW ABOUT THIS…?
“YOU CAN BE MAGNIFIED”Activity No. 7 pp. 195-197 Learner’s Material
• List of Materials• Procedures 1 - 9. (Listen to some revised setup.)• Table of Observed Data (p. 197)• Questions to answer. (Q17, 18, 19, 20)
“YOU CAN BE MAGNIFIED”Activity No. 7 pp. 195-197 Learner’s Material
• Procedures 1 - 9. (emphasis…)
DISCUSSIONS OF RESULTS/OBSERVATIONS
Q17. What is the focal length of the convex lens assigned in your group?
“YOU CAN BE MAGNIFIED”Activity No. 7 pp. 195-197 Learner’s Material
• Procedures 1 - 9. (for distant object)
distant object
lens screen
DISCUSSIONS OF RESULTS/OBSERVATIONS
How would you describe the image formed if a distant object is used?
“YOU CAN BE MAGNIFIED”Activity No. 7 pp. 195-197 Learner’s Material
• Procedures 1 - 9. (LM Setup. Use cm units.)
q lens p
“YOU CAN BE MAGNIFIED”Activity No. 7 pp. 195-197 Learner’s Material
• Tabular Data. (as seen in LM p.197)
“YOU CAN BE MAGNIFIED”Activity No. 7
pp. 195-197 Learner’s Material
• Based on the data obtained, associate the measurement of distances to:
(f = lens focus, p = object’s distance, and q = eye distance)
DISCUSSIONS OF RESULTS/OBSERVATIONS
TO SUMMARIZE…
TEST YOUR LEARNING…
LENS to
ANSWER TO THE TEST…
LENS to
