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# Why is the ray passing through centre of curvature reflects along the same path?

Updated: 9/21/2023

Wiki User

11y ago

Because a ray that passes through the center of curvature falls perpendicular to the surface (along a normal to the surface), hence it is reflected along the same path.

Wiki User

11y ago

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Q: Why is the ray passing through centre of curvature reflects along the same path?
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### What is definition of centre of curvature of lens?

define the term centre of curvature

### What is the center of curvature of the mirror?

the centre of sphere is known as centre of curvature

### What is the difference between Radius of curvature and centre of curvature?

the center of curvature is the ORIGIN of the radius of curvature

### Where will the image form when you place an object on the principal axis of a concave mirror at a point between focus and centre of curvature?

If the object is placed on the principal axis of a concave mirror at a point between the focus and centre of curvature the image will form beyond the centre of curvature

### Why light ray retrace its path when passes through center of curvature?

The light ray passing from the centre of curvature is perpendicular or normal to the the sphere of which the concave mirror is a part . because the ray from centre to mirror will act as the radius and we know that radius is perpendicular to the tangent at the point of contact. hence angle of incidence = 0 degree , so angle of refraction will also be 0 degree , hence the ray will retrace its path .Read more: Why_light_ray_retrace_its_path_when_passes_through_centre_of_curvature_of_a_concave_mirror

### What is the ratio of focal length of a spherical mirror to its radius curvature?

The focal point of a convex mirror lies on the same side as the centre of curvature and is at a distance of half the radius of curvature from the optical centre.

### How do you mark equidistant points on circle?

It is the radius from the centre to the circumference or the diameter passing through the centre to both sides of the circumference

### When a ray of light passing through a point in a lens does not undergo deviation?

When it passes through optical centre.

### Is the equator the highest mountain?

No it is not a mountain. It is an imaginary line passing through the centre of the earth.

### What is the center of spherical mirror?

The geometric centre of a spherical mirror is called its pole. The centre of the hollow sphere for which the mirror is a part, is called the centre of curvature. The line joining the centre of curvature and the pole is the principal axis. A light ray incident on a spherical mirror, after reflection appears to pass through the principal focus in the case of a convex mirror and passes through the focus in the case of concave mirror. The diameter of the spherical mirror gives the measure of its aperture

### How many lines of symmetry does a circle in circle?

An infinite number, all passing through the centre.

### Why light ray retrace its path when passes through center of curvature of a concave mirror?

Because the center of curvature is defined to be in the direction of the normal. remember that a reflecting angle of light, relative to the normal, equals minus the angle of the beam that hit the mirror, relative to the normal. since the center of curviture is in the direction of the normal. A beam going through it would be with an angle of zero, and there for return with an angel of (minus) zero. In other words it comes back in the same direction.