"Unit Error-prone Strengthening Training" Light Phenomenon PPT

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"Unit Error-prone Strengthening Training" Light Phenomenon PPT

Common mistake point 1: Not clear about the dynamic changes of the optical path

1. As shown in the picture, place the plane mirror and pencil vertically on a horizontal table. Which of the following statements is correct (D)

A. The pencil should be placed directly in front of the plane mirror, otherwise the image cannot be formed

B. When the plane mirror moves vertically upward, the image of the pencil will also move upward.

C. If a smaller plane mirror is used instead, the pencil image will become smaller.

D. If the pencil is turned 45° in the direction of the arrow in the figure, the pencil will be perpendicular to its image

2. As shown in the figure, a beam of light is reflected on a plane mirror, and the reflected light happens to shine at point A of the light screen. If you want to make the reflected light shine at point B of the light screen, then the following method is used (A)

①Only move the light screen vertically downward for a certain distance ②Only rotate the plane mirror clockwise through a certain angle (<90°) around the incident point O ③Only move the plane mirror vertically upward for a certain distance ④Only move the plane mirror horizontally for a certain distance to the right distance

A. Only ② is feasible B. Only ④ is feasible

C. Both ① and ② are feasible D. Both ③ and ④ are feasible

Common mistake 2: Not understanding the laws of refraction of light

3. As shown in the figure, a beam of light slants into a cup filled with water, forming a light spot at the bottom of the cup. If water is gradually added to the cup, the light spot at the bottom of the cup will appear (A)

A.Move to the right B.Move to the left

C. Stay still D. None of the above statements are correct

4. As shown in the figure, a beaker contains half a cup of water and is placed on a horizontal board AB. A beam of light shines vertically downward on the water. Now place a small wooden block C under end B to tilt the board small angle, (C)

A. The reflected light rotates clockwise

B. The reflected light rotates counterclockwise

C. The direction of the refracted light does not change

D. The refracted ray rotates counterclockwise

Common mistake 3: Not knowing how to draw a light path diagram

5. Please draw the light path diagram of the moon in the water (use point M to represent the moon).

6. As shown in the picture, Xiao Ming looks down from above the swimming pool. Please roughly draw the light path diagram of Xiao Ming observing point A on the bottom of the pool from point B on the shore.

7. As shown in the figure, the human eye observes the candle A on the other side through a glass prism and finds that the formed image is at A'. Select a point S on A to draw a light path diagram to illustrate the principle of imaging at S' (you can just draw a ray).

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For more information about the PPT courseware "Light Phenomenon Unit Error-prone Strengthening Practice", please click the "Light Phenomenon PPT Unit Error-Prone Strengthening Practice PPT" tab.

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"Integration of this Chapter" Light Phenomenon PPT High School Entrance Examination Focus Experience 1. (2018 Chifeng High School Entrance Examination, Inner Mongolia) Regarding light phenomena, the following statements are correct: ( ) A. Light propagates along straight lines in the same medium B. In the diffuse reflection phenomenon, the light path is irreversible C .The farther the same person is from the plane mirror, the result will be...

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Update Time: 2024-07-03

This template belongs to Physics courseware People's Education Edition Physics for Grade 8, Volume 1 industry PPT template

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