Characteristics of Image by Plane Mirror
Characteristics of Image by Plane Mirror
The various characteristics of the image formed by plane mirror are:
When we see the mirror, the image appears to be formed behind the mirror. Now, put a vertical screen behind the plane mirror, the image appears to be formed behind the mirror. Even if the screen is placed in front of the plane mirror, then the image cannot be formed on the screen. This type of image is called as virtual image.
Side Inversion or Lateral Inversion:
If we stand in the front of the plane mirror and lift our right hand, then we see our image lift its left hand. And if we lift our left hand, then the image appears to lift its right hand.This mean that the right side of our body becomes the left side in the image while the left side of our body becomes the right side of the image. It appears as if our image has been 'reversed side ways' with respect to our body. The effect of reversing the sides of an object and its image is called lateral inversion. So , we can say that the image formed in a plane mirror is laterally inverted.
We have seen that the word Ambulance is written as laterally inverted. This is because that when a driver of a vehicle ahead of the ambulance looks in the rear view mirror he sees the lateral inversion that is he sees Ambulance written on it and gives way to it.
Which of the following are correct : (a) A plane mirror forms a virtual image, Such an image is nor formed by the actual intersection of light rays and cannot be formed on a screen. (b) The image formed by a plane mirror is erect. So, the image of a person formed by a plane mirror has the head at the top and the feet at the bottom. (c) The size of the image formed by a plane mirror is equal to that of the object.
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| Right Option : D | |||
| View Explanation | |||
Which of the following are correct : (a) The image is laterally inverted means that in the image formed by a plane mirror, the left and right sides are reversed. (b) The image is laterally inverted means that in the image formed by a plane mirror, the top and bottom sides are reversed. (c) A plane mirror forms a virtual image, Such an image is nor formed by the actual intersection of light rays and cannot be formed on a screen. | |||
| Right Option : D | |||
| View Explanation | |||
The distance between a plane mirror and the image of an object placed in front of the mirror is 4 m. If now the object is moved 1 m towards the mirror, then the distance between the object and its image in the will be ______________ | |||
| Right Option : C | |||
| View Explanation | |||
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Om Umang
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