0
What else can I help you with?
What is distance of principal focus from optical centre called?
The distance of the principal focus from the optical center is called the focal length.
The blank length of lens is the distance from the center of the lens to its principle focus is what?
The blank you are referring to is the focal length of the lens. It is the distance from the center of the lens to its principal focus, where parallel rays of light converge after passing through the lens.
Whats the focal length of a lens?
The focal length of a lens is the distance between the lens and the image sensor when the subject is in focus. It is a measure of how strongly the lens converges or diverges light rays. Shorter focal lengths result in wider fields of view and greater magnification, while longer focal lengths result in narrower fields of view and less magnification.
How can you tell what the focal length is for a lens?
Easy way: Use it to form an image of the sun or moon, and measure the distance of the image behind the lens. When the object is at infinity, the distance between the lens and the image is the focal length of the lens.
How can we calculate the eccentricity e of a planet's orbit?
The eccentricity of a planet's orbit can be calculated using the formula e c/a, where c is the distance between the center of the orbit and the focus, and a is the length of the semi-major axis of the orbit.
What is distance of principal focus from optical centre called?
The distance of the principal focus from the optical center is called the focal length.
The distance from the center of the lens to its principal focus is called the what?
Focal length
The blank length of lens is the distance from the center of the lens to its principle focus is what?
The blank you are referring to is the focal length of the lens. It is the distance from the center of the lens to its principal focus, where parallel rays of light converge after passing through the lens.
Whats the focal length of a lens?
The focal length of a lens is the distance between the lens and the image sensor when the subject is in focus. It is a measure of how strongly the lens converges or diverges light rays. Shorter focal lengths result in wider fields of view and greater magnification, while longer focal lengths result in narrower fields of view and less magnification.
What is a focal length?
it is the distance a lense is from an object in order for it to be in focus
How can you tell what the focal length is for a lens?
Easy way: Use it to form an image of the sun or moon, and measure the distance of the image behind the lens. When the object is at infinity, the distance between the lens and the image is the focal length of the lens.
What is focal length?
Focal length is the distance between the optical center of a lens and the image sensor when the lens is focused on a subject at infinity. It determines the magnification and field of view of the lens, with shorter focal lengths providing wider angles of view and longer focal lengths providing narrower angles of view. Focal length is commonly measured in millimeters.
How can we calculate the eccentricity e of a planet's orbit?
The eccentricity of a planet's orbit can be calculated using the formula e c/a, where c is the distance between the center of the orbit and the focus, and a is the length of the semi-major axis of the orbit.
What is the relationship between working distance and focal length in photography?
In photography, the working distance is the distance between the camera and the subject being photographed. The focal length of a lens determines how much of the scene will be in focus and how large the subject will appear in the frame. Generally, as the focal length of a lens increases, the working distance also increases, meaning the photographer needs to be farther away from the subject to capture it in focus.
What is an imaginary straight line drawn perpendicular to a concave mirror at its center?
The line is called the principal axis. It passes through the center of curvature and focus of the mirror.
What is the principal focus of convex mirror?
The principal focus of a convex mirror is the point where light rays parallel to the mirror's principal axis appear to converge after reflection. This point is located behind the mirror at a distance equal to half the radius of curvature of the mirror.
What is the exact relation of the focal length to the center of curvature?
The focal length (a.k.a focus) is exactly half the length of the centre of curvature. ie. F = 1/2 C
