Can focus and Centre of curvature be same?

Concave mirrors were silvered on the inside of the sphere and convex mirrors were silvered on the outside of the sphere. In Lesson 3 we will focus on concave mirrors and in Lesson 4 we will focus on convex mirrors….The Anatomy of a Curved Mirror.

Principal axis	Center of Curvature	Vertex
Focal Point	Radius of Curvature	Focal Length

When an object is between focus and Centre of curvature in a convex lens the image will form dash on the other side of the lens?

If the object is placed at the focus, the image will be formed at infinity and the object is placed at 2F the image will be formed at 2F on the other side of the lens. Complete answer: To begin with let us draw the ray diagram placing the same object but at two different positions at between F and 2F.

Is Centre of curvature and 2F same?

Answer: Yes the centre of curvature C and 2F are same. The centre of the curvature of the spherical lens is at the double of the focal length from the pole of the mirror located on the principal axis.

Is there a relationship between the curvature of a lens and its focal length?

Higher angles of curvature lead to shorter focal lengths due to the fact that light waves are refracted at a greater angle with respect to the optical axis of the lens.

Is it possible to obtain an image between focus and centre of curvature of a convex mirror?

Convex mirrors always form virtual images. This is because the focal point and the centre of curvature of the convex mirror are imaginary points and that cannot be reached.

When the object is placed between focus and centre of curvature of concave mirror then?

If the object is placed between the centre of curvature and focus of a concave mirror then the image is formed beyond the centre of curvature of the concave mirror.

When object is placed between the optical center and focus of a convex lens?

Explanation: When the object is kept between optical centre and focus of a convex lens, the image is formed on the same side, behind the object. The image thus formed is virtual, enlarged and erect.

When an object is kept between optical center and focus for a convex lens?

When an object is placed between the focus (F) and optical centre (O) of convex lens, then the image is formed beyond F1 to the same side of as that of object and is erect, virtual and magnified image.

Why is R 2f not applicable?

R=2f is not applicable to lenses the way it is applicable to mirrors. The reason is the lens makers formula. According to lens makers formula the focal length depends on radius of curvature on both sides. As well as on the refractive index.

Why Centre of curvature is called 2f?

General Science HEY!! The 2F point is called the centre of curvature . If we take the whole lens radius and draw a circle then the centre of the circle will be at point 2F from the pole of the lens , thus the 2F point is called the centre of curvature of the lens .

When an object approaches a convex lens from infinity towards its focus the image formed by it?

Answer: As long as object distance is more than focal length, as an object approaches towards a convex lens, the real image formed by its shifts away from the lens.

Do biconvex lenses have the same radius of curvatures?

One thing to be noticed is that the distances PO1 and PO2 are equal. Here, O1 and O2 are the centres of curvatures of two convex lenses or biconvex lenses. Since O1 and O2 are the centres of curvatures, i.e., PO1 and PO2 are the radii of curvatures, so PO1 = PO2. This proves that biconvex lenses have the same radius of curvatures.

What is the optical centre of a convex lens?

We know that images formed by lenses are because of the refraction of light. A convex lens is a converging lens that converges the rays coming from the point object at a certain point; therefore, the image formed is real. .We know that the centre of the spherical convex lens is the optical centre.

What is the difference between image formation by concave and convex lenses?

The size of the image is much smaller than that of the object. When an object is placed at a finite distance from the lens, a virtual image is formed between the pole and the focus of the convex lens. The size of the image is larger than that of the object. Summary of Image Formation by Concave and Convex Lens

What is the principal axis of a biconvex lens?

The line joining the centres of curvatures of these two lenses viz: O1and O2, passing via optical centre ‘P’ is the principal axis of the biconvex lenses. We know that a convex lens contains two focal points one is on the left-hand side and the other on the right-hand side.