A concave mirror cannot forma)virtual image of virtual objectb)virtual image of a real objectc)real image of a real objectd)real image of a virutal objectCorrect answer is option 'A'. Can you explain this answer?

Question

Answer

-Virtual image cannot be formed from a virtual object.
- When an object is placed between pole and focus, the image formed by the concave mirror is magnified, virtual and erect.
-When an object is placed beyond the centre of curvature , the image of it is formed between the centre of curvature and focus which is diminished,real and inverted,so the real image of the real object can be formed by a concave mirror.
-When the object is virtual, the image formed is real for the concave surface as shown in figure.

Answer

Because the rays never really converge, a

virtual image cannot

be projected onto a screen. A diverging lens (one that is thicker at the edges than the middle) or a

convex mirror forms

a

virtual image

. Such an

image

is reduced in size when compared to the original

object

.

Answer

A concave mirror is a curved mirror with a reflective surface that bulges inward. It is also known as a converging mirror because it converges or focuses light rays that are parallel to its principal axis. When discussing the formation of images by a concave mirror, we need to consider both real and virtual images.

Real Image of a Real Object:
A real image is formed when the rays of light actually converge at a point after reflection. It is formed in front of the mirror and can be projected onto a screen. A real object is an object that exists physically. In the case of a concave mirror, a real object placed beyond the focal point (F) will produce a real, inverted, and diminished image between the focal point and the center of curvature (C). The image formed is real because the light rays converge to a point.

Virtual Image of a Real Object:
A virtual image is formed when the rays of light appear to diverge from a point after reflection. It cannot be projected onto a screen since the light rays do not actually meet. However, it can be seen by an observer looking into the mirror and appears to be behind the mirror. A real object placed within the focal length of a concave mirror will produce a virtual, upright, and magnified image on the same side as the object. The image formed is virtual because the light rays only appear to meet when traced backward.

Real Image of a Virtual Object:
A virtual object is an object that does not physically exist but is formed by the apparent intersection of light rays. A concave mirror cannot form a real image of a virtual object because a virtual object does not emit or reflect light rays. It is only an apparent object formed by the extension of the reflected rays. Therefore, the rays of light cannot converge to form a real image.

Virtual Image of a Virtual Object:
Similarly, a concave mirror cannot form a virtual image of a virtual object. Since a virtual object is only apparent and does not emit or reflect light rays, there are no rays to trace backward to form a virtual image.

In conclusion, a concave mirror cannot form a virtual image of a virtual object because a virtual object does not physically exist. It can only form real images of real objects and virtual images of real objects.

Similar Class 12 Doubts

Radius of curvature of concave mirror is 40 cm and the size of real image is twice as that of the object. the object distance is?

Mark the correct options

Two objects And B when placed in front of a concave mirror give image of equal size the focal length of concave mirror is 7.5 cm and size of the object A is three times the size of object B the distance of B from the mirror if A is placed 30 cm from the mirror is,?

Top Courses for Class 12

Related Content

Schools

Competitive Examinations

Quick Access Links

Technical Exams