"Exploring the Imaging Characteristics of Plane Mirrors" Light and Eyes PPT Courseware

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"Exploring the Imaging Characteristics of Plane Mirrors" Light and Eyes PPT Courseware

teaching objectives

1. Know the characteristics of plane mirror imaging and be able to use the characteristics of plane mirror imaging to analyze and explain simple phenomena.

2. Understand concave mirrors and convex mirrors and their effects on light.

3. Through experiments, explore the relationship between the image and the object when the plane mirror creates an image. Learn to use the "equivalent substitution" method to determine the position of the virtual image and compare the size of the image and the object.

4. Understand the applications of plane mirrors and spherical mirrors in daily life.

Detection Preview Exchange Display

a. Give examples of plane mirror imaging phenomena in life.

b. What are the characteristics of plane mirror imaging?

c. What are the applications of plane mirror imaging in life?

The following issues need to be noted during the experiment:

1. How to place the mirror?

2. What is the function of the ruler?

3. Why use 2 identical candles?

4. Why use flat glass instead of flat mirror?

Answer:

1. Vertical desktop

2. Measure whether the distance from the object to the plane mirror is equal to the distance from the image to the plane mirror

3. It is easy to observe whether the object and the image are the same size

4. The purpose of using a glass plate instead of a plane mirror is to facilitate the determination of the image position.

A transparent glass plate is used instead of a plane mirror. Although the image is not as clear as a plane mirror, it is possible to observe the image of candle A as well as candle B, which cleverly solves the problem of determining the position and size of the image.

On-site training

1: "Guilin's landscape is the best in the world". The beautiful peaks on both sides of the Li River clearly reflect "reflections" on the calm water. It is: ( )

A. mountain shadow

B． real image of mountain

C. Inverted virtual image of a mountain

D． Upright virtual image of a mountain

2: The pointer position on a clock face is seen from a plane mirror as shown in the figure. At this time, the time is ().

A. 7:25

B. 6:35

C. 5:25

D. 4:35

3: A person walks from a distance to a vertically hung plane mirror. The size of his image in the mirror will be:

A. No change B. Gradually getting bigger

C. Gradually become smaller D. First become larger and then become smaller

How does the human eye see the image in a plane mirror?

——The reason for the imaging of plane mirrors

Virtual image: It is not formed by the convergence of actual light rays, but is formed by the intersection of the reverse extension lines of reflected light rays. Virtual images cannot be displayed on a light screen.

Operation:

Classwork: Questions 1, 2, 3, 4, and 5 on page p59.

Tutorial (preview):

a. Give examples of the refraction of light in life.

b. Summarize the refraction rules of light entering water from air.

c. Give examples of applications of refraction phenomena.

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"Exploring the Imaging Characteristics of Plane Mirrors" Light and Eyes PPT Courseware 2:

"Exploring the Imaging Characteristics of Plane Mirrors" Light and Eyes PPT Courseware 2 Learning Objectives 1. Know the imaging characteristics of plane mirrors, and be able to use the imaging characteristics of plane mirrors to analyze and analyze simple phenomena 2. Know the applications of plane mirrors, concave mirrors and convex mirrors in real life 3. Exploring through experiments...

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Update Time: 2024-11-15

This template belongs to Physics courseware Guangdong and Shanghai version of eighth grade physics volume one industry PPT template

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