What is the Difference Between Virtual and Real Images?

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The main difference between real and virtual images lies in the way they are produced and their appearance. Here are the key differences between real and virtual images:

  1. Formation: Real images are formed when light rays converge, whereas virtual images occur when light rays only appear to diverge.
  2. Inversion: Real images are inverted, while virtual images are erect.
  3. Image Location: Real images can be formed on a screen, while virtual images appear to be on the lens or the mirror itself.
  4. Optical Formation: Real images are typically formed by concave mirrors and convex lenses, while virtual images can be formed by plane mirrors, convex mirrors, and concave lenses.
  5. Intersection of Light Rays: Real images are formed due to the actual intersection of light rays, while virtual images are formed due to the imaginary intersection of light rays.

Some examples of virtual images include images formed in plane mirrors, rearview mirrors of vehicles, and images formed in convex mirrors. On the other hand, real images can be observed in a concave mirror or when a convex lens is used.

Comparative Table: Virtual vs Real Images

Here is a table comparing the differences between virtual and real images:

Feature Real Image Virtual Image
Formation Formed when rays converge Formed when rays only appear to diverge
Inversion Inverted Erect
Lens Always formed by a convex lens Can be formed by concave, convex, or plane mirrors
Screen Formed on the screen Appears to be on the lens or the mirror itself
Mirror Formed by a concave mirror Formed by a convex mirror
Ray Intersection Real images are formed due to the actual intersection of light rays Virtual images are formed when light rays imaginarily interact with each other
Ray Direction Light rays diverge from the same side of the mirror after converging and forming the real image Light rays assumed to diverge from a point somewhere behind the mirror

Virtual images are created through the reflection or refraction of light rays, while real images are created by the convergence of light rays at a specific point. Real images can be displayed on a screen, whereas virtual images appear to be on the lens or the mirror itself.