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# An object is placed between two plane mirrors arranged at right angles

Two mirrors are arranged as shown in the drawing. Light is incident from the right on the first mirror at an angle of 70°. if plane mirror, if concave. Number of the image =θ​−1, where θ is the angle between the mirrors. Here θ= Therefore number of images formed =​−1=3 · = · ​ · 1 · 3. An object is positioned between two plane mirrors inclined at right angles to each other. The object is 1 unit distance from each mirror, the number of. BEST ETHEREUM MOTHERBOARD

In an image formed by a plane mirror, the left side of object appears on the right side in the image whereas the right side of object appears on the left side in the image. Change of sides of an object and its mirror image is called lateral inversion. For example : If we stand in front of a plane mirror and lift our left hand, then our image in the plane mirror appears to lift its right hand.

And if we lift our right hand, then our image in the plane mirror appears to lift its left hand. This means that the left side of our body becomes the right side in the mirror image whereas the right side of our body becomes left side in the mirror image. Our image in the plane mirror is laterally inverted or sideways reversed. Reflected Light can be reflected again If the rays of light reflected by a plane mirror are incident on another plane mirror, then the reflected rays are reflected again.

The reflected rays of the first plane mirror become incident rays for the second plane mirror. Periscope An optical instrument or device in which reflected light is periscope. A periscope is a long, tubular device through which a person can see objects that are out of the direct line of sight. By using a periscope, we can see the objects on the other side of a high wall which cannot be seen by us directly.

The periscope makes use of two plane mirrors to see over the top of things. Principle of Periscope A periscope works on the reflection of light from two plane mirrors arranged parallel to one another. Arrangement of Periscope 1 A periscope consists of a long tube T having two plane mirrors M1, and M2 fitted at its two ends.

Working of Periscope 1 The upper hole of periscope is turned towards the object to be seen so that the top mirror M1 , faces the object. The light rays coming from the object fall on the plane mirror M1. The mirror M2 then reflects the reflected rays of light towards the eye of the person looking into the periscope through the lower hole.

Some of the Uses of Periscopes 1 A periscope is used to see over the heads of a crowd. So why are there three images and how can the three images be compared and contrasted? Flickr Physics Photo A candle is placed in front of a right angle mirror. Three images are formed by the mirror. Investigating the Three Images The diagrams below depict the three images of a right angle mirror system. The location where a person must sight to view his image and the left-right orientation of the resulting image is shown.

In each case, the object is raising his left hand. Diagram A and Diagram B show the appearance of your image when you sight in one of the single faces of the mirror. These two plane mirror images exhibit the left-right reversal that was discussed earlier in Lesson 2. While the object is raising her left hand, the image appears to be raising the right hand.

This image characteristic is not unusual, for we have already discussed it in detail earlier in Lesson 2. These two images are sometimes referred to as primary images. When viewing a primary image, light is reflecting off a single mirror before arriving at your eye. Diagram C shows the appearance of the middle image, sometimes referred to as a secondary image.

The secondary image does not exhibit left-right reversal; a careful inspection of Diagram C reveals that while the object is raising the left hand, the image is also raising the left hand. Why the difference? Why would the secondary image not produce the left-right reversal that we observe in most plane mirror images? To answer these questions, we need to begin developing an understanding of the image locations for these three images and to generate the ray diagrams for these three images.

It has already been pointed out that an image is the location in space where all the reflected light appears to diverge from. Everyone viewing the image would be sighting at the same location. Thus, if you were able to sight at the image from at least two different locations and extend the lines of sight behind the mirror, you would be able to determine the image location.

This line of sight method is often used in Physics labs to determine the location of the three images. The diagram below shows the lines of sight that are required to view the three different images produced by a right angle mirror system.

Lines of sight are drawn for two different eye locations. When these lines of sight are extended backwards, three intersection points are made - one for each image. An inspection of the diagram shows that image 1 is located directly across the face of the mirror and the same distance behind the mirror as the object is in front of the mirror nothing surprising yet. Image 2 is located directly across the other face of the mirror and the same distance behind the mirror as the object is in front of the mirror still nothing surprising.

Image 3 is located directly through the crease of the mirror and the same distance from the crease as the object is from the crease now that might be surprising. In fact, a diagonal line drawn from the object location through the crease of the mirror will pass through the third image.

#### Characteristics of Image Formed by a Plane Mirror 1 The image formed by a plane mirror is virtual or unreal.

 Best bets for saturday 425 An object is placed between two plane mirrors arranged at right angles Oberbettingen bahnhof bern Ethereum and bitcoin safe investments Define investing and speculating. Trading 1 hour time frame forex factory 402 Derby 2022 betting 9 An object is placed between two plane mirrors arranged at right angles This incident ray will originate at the first face of the mirror; thus, the incident ray on the second face of the more info is merely the reflected ray from the first face. This means that the left side of our body becomes the right side in the mirror image whereas the right side of our body becomes left side in the mirror image. For example : If a person is 1. It has already been pointed out that an image is the location in space where all the reflected light appears to diverge from. It can be seen only by looking into the plane mirror. Such a system is called a right angle mirror pretty clever, huh? When these lines of sight are extended backwards, three intersection points are made - one for each image. An object is placed between two plane mirrors arranged at right angles Medansky craps betting An object is placed between two plane mirrors arranged at right angles While the object is raising her left hand, the image appears to be raising the right hand. The image is neither enlarged neither bigger than the object nor diminished nor smaller than the object. Image 2 is located directly across the other face of the mirror and the same distance behind the mirror as the object is in front of the mirror still nothing surprising. The light rays coming from the object fall on the plane mirror M1. Go here that the two primary images images 1 and 2 are seen by the eye as the result of a single reflection of light off a single mirror.

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