what is the difference between a plane mirror and a concave mirror?
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A plane is a flat surface. So a plane mirror is just a smooth, mirrored surface that is completely flat. ... And a concave mirror is a spherical mirror where the mirrored surface is on the inside of the spherical curve. Plane mirrors produce virtual, upright images that are the same size as the object.
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A concave mirror can form both real, inverted images of various sizes and virtual, erect and enlarged images depending on the position of the object whereas a concave lens forms only virtual, diminished and erect images for all positions of the object.
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To determine the focal length of a concave mirror, by obtaining image of a distant object. A concave mirror, like a plane mirror, obeys the laws of reflection of light. ... Thus, the focal length of a concave mirror can be estimated by obtaining a 'Real image' of a distant object at its focus, as shown in the figure.
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For concave it is just the opposite of convex. So, the focal length of concave mirror and lens is always -. And focal length of Concave always negative. The focal length of a huge concave mirror is 120 cm.
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Plane mirrors and convex mirrors only produce virtual images. Only a concave mirror is capable of producing a real image and this only occurs if the object is located a distance greater than a focal length from the mirror's surface.
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Focal length of a plane mirror is infinity. (A plane mirror can be considered as a spherical mirror of infinite radius of curvature.
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The focal length of a concave mirror is negative and that of a convex mirror is positive. You can also prove the same by using the mirror formula (1/f = 1/v +1/u). Let's see how, Since we know object is always placed on the left side or direction opposite to the incidence ray of the mirror.
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Since the focal length of concave mirror is on the left side ,by sign convention it will be NEGATIVE. ... Going by the Cartesian convention of signs the focal length of concave mirror is negative since it lies to the left of the mirror where the pole is considered the origin and the principal axis be considered the X axis.
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Answer: "Focal length is positive" is one of the option that doesn't apply for the concave mirror. Explanation: The focal length is negative for a concave mirror since according to the Cartesian Sign, the object is placed "in front of the mirror" and the sign of the object is taken as 'negative'.
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Difference between Concave and Convex Lens. A convex lens or converging lens focuses the light rays to a specific point whereas a concave lens or diverging lens diverges the light rays. ... Concave lenses and convex lenses are often used together with known as Concave – Convex lens.
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The basic difference between concave and convex are as follows: Concave describes a shape that curves inwards. The sideview mirror of a car, which curves inwards, is a good example of a concave shape. Convex describes a shape that curves outwards.
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A concave lens is thicker at the edges than it is in the middle. This causes rays of light to diverge. The light forms a virtual image that is right-side up and smaller than the object. A convex lens is thicker in the middle than at the edges.
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The minimum distance between an object and its real image in the case of a concave mirror is Zero. When the object is at the 2F distance i.e. the center of curvature, then the image is real and formed inverted at the same distance.
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To determine focal length of a given concave mirror The screen should be placed in front of the reflecting surface of the mirror. To obtain a clear, sharp image the screen should be adjusted. Using a metre scale the distance between the concave mirror and screen can be determined.
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This is rotational symmetry. While the shape appears the same as the reflection, the process to get there is different. The difference between the two, then, is the in the way the object is moved or transformed to get to the result.
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Concave describes shapes that curve inward, like an hourglass. Convex describes shapes that curve outward, like a football (or a rugby ball).
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The number of images formed by two adjacent plane mirrors depends on the angle between the mirror. If (in degrees) is angle between the plane mirrors then number of images are given by, n = 360 θ − 1. We verify this formula in this experiment.