Question

Differentiate between real and virtual images.

Hint:

Real image → Rays actually meet → Screen possible. Virtual image → Rays only appear to meet → No screen.

Answer 1

Concept: Images formed by mirrors and lenses are classified as real or virtual depending on whether light rays actually meet or only appear to meet. Difference between Real and Virtual Images: \begin{center} \begin{tabular}{|c|c|c|} \hline Property & Real Image & Virtual Image
\hline Formation & Formed by actual convergence of rays & Formed by apparent convergence of rays
\hline Screen & Can be obtained on a screen & Cannot be obtained on a screen
\hline Nature & Usually inverted & Erect (upright)
\hline Location & Formed in front of mirror / other side of lens & Formed behind mirror / same side of lens
\hline Examples & Image by convex lens (beyond focal length), concave mirror & Plane mirror, convex mirror, magnifying glass
\hline \end{tabular} \end{center} Explanation: Real Image: When reflected or refracted rays actually meet at a point, a real image is formed. Since light physically converges, it can be projected on a screen. Virtual Image: When rays only appear to meet when extended backward, the image formed is virtual. Since no actual convergence occurs, it cannot be caught on a screen.