Physics - Senior Secondary 3 - Energy quantization

Term: 1^st Term

WEEK: 7

Class: Senior Secondary School 3
Age: 17 years
Duration: 40 minutes for each of 5 periods
Date:
Subject: Physics
Topic: Energy Quantization
Subtopics:

• Photo-electric effect
• Einstein photo-electric equation and its explanation
• X-ray:
• Production
• Characteristics and properties
• Uses

SPECIFIC OBJECTIVES:
By the end of the lesson, students should be able to:

1. Understand the photo-electric effect and its significance in physics.
2. Apply Einstein’s photo-electric equation to explain the effect.
3. Explain the production, characteristics, and properties of X-rays.
4. Identify the various uses of X-rays in medicine and industry.

INSTRUCTIONAL TECHNIQUES:

• Explanation
• Demonstration
• Video clips on the photo-electric effect and X-ray production
• Hands-on activity: Visiting an X-ray unit for observation

INSTRUCTIONAL MATERIALS:

• X-ray machine (for excursion)
• Physics textbook

Whiteboard markers

CLASSWORK:

• Derive Einstein’s equation for the photo-electric effect from the concepts discussed.
• Describe the safety precautions taken when using X-ray equipment.

CONCLUSION:

• The teacher reviews student responses and encourages reflection on the importance of X-rays in daily life.