In the Plane Mirror Imaging Characteristics experiment, what will happen if the glass plate is not p

Imaging in a flat mirror.

In the characteristic experiment, if the glass plate is not perpendicular to the tabletop, the image of the object will no longer be above the tabletop. The image formed by the object behind and the object in front cannot be at the same height. Therefore, no matter how you move an object, the image of the object and the object will not coincide, and therefore the image will not be able to compare the size of the object.

In the experiment of imaging characteristics of plane mirrors, if the glass plate is not perpendicular to the tabletop, the object image will not coincide and the glass plate should not be too thick, otherwise two images will appear.

I will first give you an analysis of the glass plate used to put an object similar to the experimental object behind the glass for the convenience of the experiment, and then slowly move it to coincide, which is to prove the imaging characteristics of the plane mirror.

You just keep moving the candle behind the glass (here the assuming experiment object is a candle) and you can't coincide with something like I've done this We're all at the beginning of 2 I have QQ and then discuss 523900247

In the plane mirror imaging characteristics experiment, if the glass plate is not perpendicular to the tabletop, the glass plate will be skewed.

The image formed by the plane mirror is still symmetrical to the mirror surface, and if the glass plate deviates from the vertical direction x degrees, the angle of rotation of the virtual image is the same as that of the glass plate.

It will not be possible to compare the size of the real object with the image through the glass.

Because there will be two images (one is the virtual image of the candle and the other is the candle on the other side of the glass plate).

It was like floating in the air, unable to determine its location.

In ** "Characteristics of Plane Mirror Imaging", the purpose of replacing the plane mirror with a glass plate The glass plate not only reflects light for imaging, but also can see the candle behind the glass plate through light During the experiment, the lit candle is placed in front of the glass plate, and the eyes should be in front of the glass plate Optionally fill in "front" or "back") to observe

In ** "Characteristics of Plane Mirror Imaging", the purpose of replacing the plane mirror with a glass plate The glass plate not only reflects light for imaging, but also can see the candle behind the glass plate through the light During the experiment, the lit candle is placed in front of the glass plate, and the eyes should observe in front of the glass plate

Objective]**Imaging characteristics of plane mirrors.

Experimental equipment] Two identical Yuzhen candles, a glass plate, a light screen, matches, and a scale.

Protocol Procedure]:

Place the glass plate vertically on the tabletop, stand a lit candle on one side of the glass plate, and observe the image of the candle on the other side of the glass plate through the glass plate.

Place the light screen in the position of the image, and directly observe whether there is an image on the light screen without looking through the glass plate.

Place the same unlit candle in the position of the image and observe the size of the image and the candle.

Move to the position of the candle and observe if the size of its image changes.

Measure the distance between the candle and the image to the glass plate.

1. The principle of plane mirror imaging is: the reflection of light.

2. The selection and placement of the mirror socks: the purpose of replacing the plane mirror with thin brown transparent glass is to facilitate the determination of the position of the image; Since the front and rear surfaces of the glass plate can be reflected and imaged, in order to reduce the interference between the two images, it is better to make the glass plate thinner. When placed, the glass plate should be perpendicular to the paper surface, otherwise the candle behind the glass plate will not be completely overlapped with the image.

3. The position and size of the image: The purpose of choosing two identical candles is to compare the relationship between the image and the size of the object, take an unlit same candle behind the glass plate to find the position of the candle image, the eyes should be observed from different angles in front of the glass plate, and at the same time move the candle behind the glass plate until it completely coincides with the image of the candle in front, indicating that the size of the image and the object are equal.

In the plane mirror imaging experiment, the unsuccessful tilt of the glass plate is determined by the law of plane mirror imaging: the plane mirror forms an equal-large, upright virtual image, and the image and object are symmetrical relative to the mirror surface.

In the experiment of plane mirror imaging, the glass plate is used instead of the plane mirror because the image of the plane mirror is a virtual image, and the glass plate is perpendicular to the horizontal desktop in the experiment, and the unlit candle is used to replace the image with the candle and the image coincide, so that the size and position of the image are determined, and we determine that the image is the same with the visual effect, this method is called equivalent substitution or equivalent substitution.

In the experiment, if the glass plate is placed at an angle, the image and the object will not be on the same horizontal plane, so that no matter how much you change the position of the candle, the object and the image will not coincide, resulting in the failure of the experiment.

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Analysis: This question tests students' understanding of the experimental characteristics of plane mirror imaging, and is a representative question.

Answer: The main reason for choosing a glass plate instead of a flat mirror is to use the transparent characteristics of the glass plate to facilitate the determination of the position of the image.

The use of thinner glass plates is to avoid the indistinguishable position caused by the simultaneous imaging of two surfaces of the glass plate.

Hope it helps, thanks

In the experiment of plane mirror imaging, the purpose of replacing the plane mirror with a glass plate is to facilitate the observation of the position of the resulting image.

For this test, the chalk is placed on the left side of the glass plate, and the eye should be on the left side of the glass plate.

If the glass plate is not aligned, the image of the candle is not on the same level as the candle, so the image of the candle does not coincide with the candle, so it is possible that the image cannot be found.

Mirrors with a smooth surface are called flat mirrors, and it is best to use mirrors such as glass that allow light to pass through.

However, in experiments, thin glass plates are often used instead of flat mirrors. Because the glass plate is used instead of a flat mirror, although the image is not as clear as that of the plane mirror, it is possible to observe the image of candle A and candle B at the same time, which cleverly solves the problem of determining the position and size of the image.

For this test, the chalk is placed on the left side of the glass plate, and the eye should be viewed on the left (left or right) side of the glass plate.

Glass plates are used instead of plane mirrors because glass plate observation can determine the position of the virtual image.

Hehe, I'm in the second year of junior high school, don't spray if you're wrong! ~

You can compare the size of the thing and find the position of the like.

The purpose of using glass plates instead of flat mirrors is to make the image and the real thing coincide and see clearly what is behind the glass.

(1) In the experiment, when the glass plate is placed, it should be bai.

Du glass plate perpendicular to the horizontal tabletop, zhi

The purpose of doing so is the DAO

It is to move candle B on the table, so that B and the image of A coincide, and determine the position of the image;

2) Candle A is lit, and two images of candle A are seen through the glass plate, and the reason for this phenomenon is that the glass plate has a certain thickness, and the two reflecting surfaces in front and back form an image each;

Move the same candle b behind the glass plate with another unlit candle b, so that the candle b coincides with the image close to the glass plate, so as to ensure that the distance between the object and the image and the mirror surface is equal;

3) Among the two images formed by the glass plate, the image that is far away from the observer is formed by the incident light from the candle through the glass plate once reflected and refracted twice, so the image is darker, so option c is in line with the topic;

4) In order to obtain the generality of the imaging characteristics of the plane mirror, the operation that should be carried out is to keep the position of the glass plate unchanged, change the object distance, and then do at least two experiments

So the answer is: (1) vertical; Moving candle B on the table can make B coincide with the image of A and determine the position of the image;

2) The glass plate has a certain thickness, and the front and rear reflecting surfaces each form an image; Near;

3) dark; c；

4) glass plate; Object distance

(1) The use of transparent glass plate is to use its transparent physical properties, so that the eye can see the image of object A on the side of candle A, and at the same time can see another object B in place of object A, so as to facilitate the determination of the position of the image and the comparison of the size relationship between objects and images

Fingers placed at the virtual candle B position will not burn the fingers, fingers placed at candle A, candle A is a candle flame, the temperature is relatively high, it will burn the fingers

2) The data of each group in the experiment were carried out with the same glass plate, and there was no problem with the other data, so it was not because the glass plate was too thick or too thin, but because in the second experiment, there was a large deviation in judging whether the images of candle B and candle A were completely coincided

3) **During the plane mirror imaging experiment, the eye should observe candle B on the side of candle A, so the eye should observe candle B at a different position on the side of candle A in front of the glass plate

Whether the light screen can accept the image, judge whether it is a real image or a virtual image, and the eyes should directly observe the light screen

So the answer is: (1) transparency; It is convenient to determine the position of the image; b；（2）a；（3）b；c．

1) The object is imaged in a plane mirror, and the image of the object is on both sides of the plane mirror, and the image of a chess piece should be observed on the side of a chess piece

Chess piece A is placed on one side of the glass plate, and chess piece B is placed on the other side of the glass plate, no matter how you move the chess piece B behind the glass plate, it cannot coincide with the image of chess piece A in the glass plate, it may be that the glass plate is not perpendicular to the table

2) Choose two identical pieces in order to compare the size of the object

3) If you want to make the image brighter, use a light source to illuminate the pieces

Answer: Solution: (1) Observe the image of chess piece A on the side of chess piece A, and you can see both the image of chess piece A and the chess piece B that replaces chess piece A

Pawn B cannot coincide with the image of Pawn A, it may be that the glass plate and the table are not perpendicular

2) The same chess pieces are used in the experiment in order to compare the size of the image with the object

3) If you want to make the image brighter, to make the object brighter, you can use a light source to illuminate the chess pieces

Therefore, the answer is: (1) a, the glass plate is not perpendicular to the tabletop; (2) compare the relationship between the image and the size of the object; (3) Use a light source to illuminate the chess pieces