Question

For real objects, which of the following can produce a real image?

Answer 1

We know that image is the point where the incident light rays meet or converge. It can also be called the focus points or the image points. There are two types of image which can be formed, namely the real image and the virtual image, depending on the position of the object and/or the nature of the optical instrument.

Complete step-by-step solution:
To understand, when real images are forms, let us first understand the difference between a virtual image and a real image.
Virtual images cannot be captured on a screen, whereas real images can be captured on the screen
When the light converges due to any optical instrument like the mirror or the lens, then real image is formed, whereas if the light appears diverges due to any optical instrument like the mirror or the lens the virtual image is formed.
Let us consider the various optical instruments and understand their image formation:
A Plane mirror produces virtual images which are the same size as that of the object. Whereas a diverging lens or the double concave lens and convex mirror produce diminished virtual images. If the object is placed within the focal length of the concave mirrors and double convex lens or converging lens, then magnified virtual images are formed.
Concave mirrors and double convex lenses or converging lenses produce real-inverted images, when the object is placed away from their respective focal points. These can either be magnified or diminished.
Thus, we can conclude that concave mirrors and double convex or converging lenses produce real-inverted images, when the object is placed away from their respective focal points.

Note: The nature of the image depends on the position of the object and/or the nature of the optical instrument. We are able to see things, as a real inverted image is formed on the retina, also known as the screen of the eyes.