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Why it is easier to find the focal point of a convex lens than that of a concave lens?
Wiki User
∙ 8y ago
A convex lens bows outward like the outside of a bowl. A concave lens bows inward like the inside of a bowl. If your camera has a telephoto zoom lens it would have both types maybe 3, 4 or more. These convex, concave lenses are used to focus an image either on to film in the old type camera, or a light-sensitive sensor in a digital camera. The purpose of focusing the image is to unscater the light coming in so your picture will be clear. Having several lenses that can be moved back and forth allows the image to get bigger or smaller, such as in a zoom lens.
Wiki User
∙ 16y ago
Wiki User
∙ 12y agoIt is because the image obtained from this lens is enlarged one if the object is placed at distances more than its centre of curvature
Wiki User
∙ 9y agoA magnifying glass (called a hand lens in laboratory contexts) is a convex lens that is used to produce a magnified image of an object.
Wiki User
∙ 8y agoIn the case of the convex lens, the focal point is real, and you can measure it directly.
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What is the difference between the focus of concave and convex mirror?
the focal point of a concave mirror is positive while a convex is negative
What creates an image that is reflected through a focal point?
a convex lens
Why is the focal point of a convex lens real and that of a concave lens virtual?
because in a convex lens rays join at a common point after refrection but in case of a concave lens they appears to come from a common point.
Explain the difference between the concave mirror and convex mirror?
A convex mirror bulges out. A concave mirror curves inward.For a convex mirror, light rays are reflected to meet at a point, while, for a concave mirror, light rays seem to be reflected from a point. If the incident rays were paraxial, the reflected rays are reflected to meet at, or appear to be reflected to a point referred to as the focal point of the lens. For a convex mirror, the focal point is real, while, that of a concave lens is virtual.
Difference between focal point and focal length?
The focal point is the point where light converges after it passes through a concave lens. The focal length is the distance of the focal point to the lens. Same for a convex lens, except that the focal point is the imaginary point from where light deflected from lens seems to have emerged.
What is the difference between the focus of concave and convex mirror?
the focal point of a concave mirror is positive while a convex is negative
What creates an image that is reflected through a focal point?
a convex lens
If Jane is myopic. Will she need concave or convex lenses explain?
Concave. With myopia, the focal point of the eye is in front of the retina. Concave lenses increase the distance of the focal point so that it lies on the surface of the retina.
Why is a focal point of a convex lens real and that of a concave lens virtual?
because in a convex lens rays join at a common point after refrection but in case of a concave lens they appears to come from a common point.
Why is the focal point of a convex lens real and that of a concave lens virtual?
because in a convex lens rays join at a common point after refrection but in case of a concave lens they appears to come from a common point.
Explain the difference between the concave mirror and convex mirror?
A convex mirror bulges out. A concave mirror curves inward.For a convex mirror, light rays are reflected to meet at a point, while, for a concave mirror, light rays seem to be reflected from a point. If the incident rays were paraxial, the reflected rays are reflected to meet at, or appear to be reflected to a point referred to as the focal point of the lens. For a convex mirror, the focal point is real, while, that of a concave lens is virtual.
What is the positive lens is the same as?
The focal point F and focal length f of a positive (convex) lens, a negative (concave) lens, a concave mirror, and a convex mirror. The focal length of an optical system is a measure of how strongly the system converges or diverges light.
The distance between a mirror and its focal point is called the?
Focal length, positive number with a concave mirror, negative for a convex mirror.
Which lens and which mirror forms a visible focal point?
A concave lens and a convex lens are what you're looking for. / | ∙ \
Difference between focal point and focal length?
The focal point is the point where light converges after it passes through a concave lens. The focal length is the distance of the focal point to the lens. Same for a convex lens, except that the focal point is the imaginary point from where light deflected from lens seems to have emerged.
Example application of concave and convex lenss?
Compared to a uniform thickness lense, concave is where the lense is thinner towards the center of the focal point of the lense than at the thicker edge; convex is much like a magnifying glass where the lense is thicker near the center focal point than at the thinner edges.
What happens to light that passes through a convex lens?
Light travelling through a concave lens will spread out. In most optical systems that use a concave lens, such as a telescope that needs to magnify the focal plane image, this is a desirable effect.
