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radius of curvature is double of focal length.
therefore, the formula is:
1/f = (n-1)[ 1/R1 - 1/R2 + (n-1)d/nR1R2]
here f= focal length
n=refractive index
R1=radius of curvature of first surface
R2=radius of curvature of 2nd surface
d=thickness of the lens
using this, if you know rest all except one, then you can calculate that.
What else can I help you with?
What has two lenses called the eyepiece lens and objective lens?
A microscope has two lenses called the eyepiece lens and the objective lens. The objective lens is closest to the object being viewed and magnifies it, while the eyepiece lens further magnifies the image formed by the objective lens for viewing by the observer.
What defect of an eye can be corrected by using a cylindrical lens?
Astigmatism is a common eye condition that can be corrected by using a cylindrical lens. This lens helps to correct the irregular curvature of the cornea or lens in the eye, which causes distorted or blurred vision. By using a cylindrical lens, the light entering the eye can be properly focused to improve vision.
What happens to light rays as they pass through lenses?
Light rays passing through lenses are refracted, causing them to change direction and converge or diverge depending on the shape and curvature of the lens. Convex lenses converge light rays, while concave lenses diverge them, allowing for the formation of images. Lens material can also affect the speed of light and how much the light is refracted.
What happens to most of the light rays that strike the convex lens?
Most of the light rays that strike a convex lens converge, or come together, at a focal point. This is due to the lens shape and the way it refracts light.
Why does the shape of the eye lens change?
This adjustment is done by two sets of muscles in the iris: its circular muscles contract to close up the iris, making the pupil smaller - while its radial muscles contract to open up the iris, making the pupil larger.
What is curvature of a lens?
The curvature of a lens refers to the amount of bending in the lens surface. A lens can have a convex curvature (outward bending) or a concave curvature (inward bending), which affects how it refracts light. Curvature is measured by the radius of curvature, which can determine the focal length and strength of the lens.
Formula of radius of curvature of double convex lens?
The formula for the radius of curvature (R) of a double convex lens is given by R = 2f, where f is the focal length of the lens. The radius of curvature is the distance from the center of the lens to the center of curvature of one of its curved surfaces.
What is Radius of curvature of a lens?
The radius of curvature of a lens is the distance between the center of the lens and its focal point. It is a measure of the curvature of the lens surface. A smaller radius of curvature indicates a more curved lens, while a larger radius indicates a flatter lens.
What does curvature of radius of a lens effect?
The curvature of the radius of a lens affects its focal length and optical power. A lens with a shorter radius of curvature will have a shorter focal length and higher optical power, while a lens with a larger radius of curvature will have a longer focal length and lower optical power.
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.
What is radius of curvature?
The radius of the sphere of which a lens surface or curved mirror forms a part is called the radius of curvature.
Can focal length and radius of curvature of a lens be same?
No, the focal length and radius of curvature of a lens cannot be the same. The radius of curvature is twice the focal length for a lens. This relationship is based on the geometry of the lens and the way light rays converge or diverge when passing through it.
What is the center of curvature of a lens?
The center of curvature of a lens is the point located at a distance equal to the radius of curvature from the center of the lens. It is the point where the principal axis intersects the spherical surface of the lens.
What is the lens maker's formula and how is it used to calculate the focal length of a lens?
The lens maker's formula is a mathematical equation used to calculate the focal length of a lens based on its refractive index and the radii of curvature of its surfaces. It is expressed as: 1/f (n - 1) (1/R1 - 1/R2) Where: f focal length of the lens n refractive index of the lens material R1 radius of curvature of the first lens surface R2 radius of curvature of the second lens surface By plugging in the values for n, R1, and R2 into the formula, one can determine the focal length of the lens.
What is the lens maker formula and how is it used to calculate the focal length of a lens?
The lens maker formula is a mathematical equation used to calculate the focal length of a lens based on its refractive index and the radii of curvature of its surfaces. It is expressed as: 1/f (n - 1) (1/R1 - 1/R2) Where: f is the focal length of the lens n is the refractive index of the lens material R1 is the radius of curvature of the first lens surface R2 is the radius of curvature of the second lens surface By plugging in the values for n, R1, and R2 into the formula, you can calculate the focal length of the lens. This formula is essential for lens designers and manufacturers to ensure that lenses have the desired optical properties for various applications.
What is curvature of a convex lens?
The curvature of a convex lens refers to the amount of curvature or bend present on each of its surfaces. It is typically defined by the radius of curvature, which indicates how sharply the lens surface is curved. This curvature plays a significant role in determining the focal length and optical properties of the lens.
What is formula for concave lens?
The formula for a concave lens is the same as for a convex lens, which is given by the lens formula: 1/f = 1/v + 1/u, where f is the focal length of the lens, v is the image distance, and u is the object distance. For a concave lens, the focal length is considered negative.
