Republic of the Philippines
Department of Education
Region IV – A CALABARZON
Schools Division of Batangas City
BATANGAS CITY INTEGRATED HIGH SCHOOL
Quarter: 2
Grade Level: 12
Week: 2
Learning Area: General Physics 2
MELCs:
- Relate the properties of EM wave (wavelength, frequency, speed) and the properties of vacuum and optical medium (permittivity, permeability, and index of
refraction) (STEM_GP12OPTIVb-12).
- Explain the conditions for total internal reflection (STEM_GP12OPTIVb14).
Day
1
Objectives
Describe light based on
Maxwell’s discovery
Topic/s
Maxwell’s Equations
Classroom-based Activities
Preliminaries
 Prayer and Greetings
 Classroom Management
 Review of the previous lesson
Pre-Test
The teacher will let the students answer the pre-test
questions orally.
Discussion on Maxwell’s Equations
EM waves describe propagating oscillations
with respect to electric and magnetic fields.
Maxwell’s wave equation shows that the speeds of
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Home-based Activities
Learning Task 1: Refer to the Self
Learning Kit for Week 2. Answer the PreTest on pages 3-4.
Republic of the Philippines
Department of Education
Region IV – A CALABARZON
Schools Division of Batangas City
BATANGAS CITY INTEGRATED HIGH SCHOOL
the waves depend on the combination of constants
involved in electrostatics and magnetism. His
calculations led him assert that light must be an EM
disturbance (in the form of waves) propagating
through the EM field in accordance with EM laws.
2


Describe EM wave
and relate it to light
Determine the effects
of different materials
on light
Light as an
Electromagnetic Wave
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Light as an Electromagnetic Wave
Learning Task 2: Follow the Light
Republic of the Philippines
Department of Education
Region IV – A CALABARZON
Schools Division of Batangas City
BATANGAS CITY INTEGRATED HIGH SCHOOL
3


Relate the properties
of EM wave
(wavelength,
frequency, speed)
and the properties of
vacuum and optical
medium (permittivity,
permeability, and
index of refraction
Discuss and illustrate
the reflection of light
Reflection of Light
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Reflection of Light
Learning Task 3: Table Completion
Describe and explain the following
properties.
Description
Properties of EM Wave
wavelength
frequency
Speed
Properties of Vacuum and Optical
Medium
Permittivity
Republic of the Philippines
Department of Education
Region IV – A CALABARZON
Schools Division of Batangas City
BATANGAS CITY INTEGRATED HIGH SCHOOL
Permeability
index of refraction
: Rizal Ave., Batangas City
: (043) 723-3484
: batangascity.batangasnhs@gmail.com
Republic of the Philippines
Department of Education
Region IV – A CALABARZON
Schools Division of Batangas City
BATANGAS CITY INTEGRATED HIGH SCHOOL
4
Describe total internal
reflection
Total Internal Reflection
Total Internal Reflection
Learning Task 4: On a short bond paper,
illustrate the law of reflection creatively.
Do not forget to put labels on your
illustration. This will serve as your
Performance task #1.
Criteria for Grading
Accuracy
Labels
Neatness
Creativity
TOTAL -
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10
10
5
5
30
Republic of the Philippines
Department of Education
Region IV – A CALABARZON
Schools Division of Batangas City
BATANGAS CITY INTEGRATED HIGH SCHOOL
5
Explain the conditions for
total internal reflection
Two Conditions for Total
Internal Reflection
Two Conditions for Total Internal Reflection
Total internal reflection (TIR) is the
phenomenon that involves the reflection of all the
incident light off the boundary. TIR only takes place
when both of the following two conditions are met:
Learning Task 5: Refer to the Self
Learning Kit for Week 2. Answer the
Evaluation/Post-Test on pages 13-14.
1. The light is in the denser medium and approaching
the less dense medium.
2. The angle of incidence is greater than the so-called
critical angle.
Prepared:
DONAVIE T. VERGARA
Teacher, General Physics 2
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: (043) 723-3484
: batangascity.batangasnhs@gmail.com
One application of total internal reflection is in
the operation of optical fibers. In an optical fiber, light
remains confined within the core of simple optical
fiber because of total internal reflection from core
cladding boundary. If light hits the boundary of a
material of lower refractive index at a steep enough
angle, it cannot get out and it is reflected back into
the high index medium.
Checked:
MARIA CHRISTINA P. DIOMAMPO
Master Teacher I
Noted:
RYAN V. VILLAHERMOSA
Head Teacher VI, Science Department