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A convex mirror has a virtual principal focus because the reflective surface curves outward, causing the light rays to diverge. When these diverging rays are traced back, they appear to converge at a point behind the mirror, creating the virtual image of the focus.

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Q: Why does a convex mirror has a virtual principal focus?
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What is meant by 'principal focus' in a convex mirror?

The principal focus of a convex mirror is the point where incident light rays parallel to the mirror's axis converge upon reflection. It is located behind the mirror and is used to define the focal length and to determine the image formation properties of the mirror.


Why can the image formed by a convex mirror not be projected on a screen?

The image formed by a convex mirror is virtual, meaning it appears to be located behind the mirror. Since the rays of light do not actually converge at a real point, they cannot be projected onto a screen. The image in a convex mirror is always smaller than the actual object and can never be brought to a focus.


Which mirror always produce an erect diminished virtual image?

A concave mirror placed between the focus and the pole will always produce an erect, diminished, and virtual image.


Does Other name of convex mirror diverging mirror?

Yes, a convex mirror is also known as a diverging mirror because it diverges light rays that fall on it, causing them to spread out. This type of mirror forms virtual, upright, and smaller images of objects placed in front of it.


Differentiate concave mirror from the convex mirror?

A concave mirror curves inward and can focus light rays to a single point, called the focal point. It can produce real or virtual images depending on the object's distance from the mirror. On the other hand, a convex mirror curves outward and always produces virtual, upright, and diminished images.

Related questions

How do you find the virtual focus in a convex mirror?

since the convex mirror is curved outwards the the focus is behind the mirror


Which spherical mirror has a virtual focus-concave or convex?

A concave mirror has a virtual focus. This is because the rays of light that are incident on a concave mirror are reflected and appear to diverge from a point behind the mirror, creating a virtual focus.


Why convex mirror has virtual focus?

The convex mirror diverges light rays, so if you draw the reflected rays in front of the mirror and continue drawing them at the back of the mirror the virtual light rays (at the back of the mirror) will join. This point is called a Virtual Focus Point.


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 meant by 'principal focus' in a convex mirror?

The principal focus of a convex mirror is the point where incident light rays parallel to the mirror's axis converge upon reflection. It is located behind the mirror and is used to define the focal length and to determine the image formation properties of the mirror.


Why can't a convex mirror create a real image?

Because the focal point of the convex mirror will always be at a 'virtual' place. Convex mirrors focus the image at a definite point.


Why can the image formed by a convex mirror not be projected on a screen?

The image formed by a convex mirror is virtual, meaning it appears to be located behind the mirror. Since the rays of light do not actually converge at a real point, they cannot be projected onto a screen. The image in a convex mirror is always smaller than the actual object and can never be brought to a focus.


Which mirror always produce an erect diminished virtual image?

A concave mirror placed between the focus and the pole will always produce an erect, diminished, and virtual image.


Does Other name of convex mirror diverging mirror?

Yes, a convex mirror is also known as a diverging mirror because it diverges light rays that fall on it, causing them to spread out. This type of mirror forms virtual, upright, and smaller images of objects placed in front of it.


Does a convex mirror always produce a virtual image?

Yes, a convex mirror always produces a virtual image. The image is located behind the mirror, and it's smaller than the object being reflected.


Differentiate concave mirror from the convex mirror?

A concave mirror curves inward and can focus light rays to a single point, called the focal point. It can produce real or virtual images depending on the object's distance from the mirror. On the other hand, a convex mirror curves outward and always produces virtual, upright, and diminished images.


How do a concave mirror and convex mirror differ?

A concave mirror curves inward and can focus light to create real or virtual images. In contrast, a convex mirror curves outward and always creates virtual images that are upright and reduced in size.