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Muceles
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∙ 13y ago
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How does a focal length change as a convex lens becomes flatter?
d focal lenght increases due to increases in the distance between centre of curvature and the centre of the convex lens on the principal axis
Why do convex lenses have shorter focal lengths than thin convex lenses?
The convex lenses are converging lens so when the curvature of the lens increases the focal length will decrease which helps when looking up close. A thin convex lens is for seeing things from a distant.
What shape are the lens inside your eyes?
convex
What shape is the lens in your eyes?
convex shaped or biconvex
How lens power change with curvature of lens surface?
The lens power increases as the curvature of the lens surface becomes steeper. A lens with a larger radius of curvature will have a lower power, while a lens with a smaller radius of curvature will have a higher power. This relationship is described by the lensmaker's equation, which relates the power of a lens to the refractive index of the lens material and the radii of curvature of its surfaces.
Convex lens uses?
The uses of convex lenses are It is used in microscopes It is also present in our eyes.
A convex lens forms a real and inverted image of a needle at a distance of 50cm from the lensWhere is the needle placed in front of the convex lens so that the image is of the same size as the object?
A convex lens forms a real and inverted image of equal size only when it is kept at the center of curvature of the lens. The image is also formed at the center of curvature at the other side. Hence, the distance of object = distance of image = 50 cm. Now, focal length = � � radius of curvature = � � 50 cm = 25 cm Hope it is clear!
Formula of radius of curvature of double convex lens?
Radius of curvture = twice the focal length of the double convex lens In symbols R = 2*f or f = R/2 Hope u seek the same
Why do you need convex lens in eye instead of concave?
we need convex lens in eyes as convex lens bulges out and thus focuses the outside light rays at a particular point in our eye, so then only we are able to see.
How does change in the thickness of lens change the focal length of lens?
Not at all. The focal length is determined by the curvature of the surfaces.
What is a lens that is thicker in the middle than at the edges?
a convex lens
How does a convex lens fix eye problems?
A convex or converging lens can fix eyes with long sighted vision. A person who is long sighted cannot focus on near objects which can be corrected by wearing a convex lens.ÊÊ
