Answer
Verified
89.4k+ views
Hint: In optics, an image is defined as the meeting point of light rays coming from an object. A real image is the point of convergence made by converging rays, while a virtual image is the meeting point obtained by extensions of diverging rays. A real image is formed where rays converge, whereas a virtual image is formed where rays only appear to diverge from a point or converge to a point.
Complete step by step solution:
A real image is located in the plane of convergence of the light rays originating from a given object. A common example of a real image is the image on a cinema screen (the source being the projector and the screenplays as a diffusely reflecting surface), the image produced on a detector in the rear of a camera, and the image produced on the retina of an eye. In ray diagrams, real images are always represented by full, solid lines; extended rays of light, on the other hand, are represented by dashed lines.
Real images can be produced by a converging lens/mirror, that is, a convex lens or a concave mirror, only if the object is placed away from the focal point of the mirror/lens, and this real image is inverted. As the object approaches the principal focus, the image approaches infinity, and when the object passes the focal point the image becomes virtual and is not inverted (upright image).
From the above discussion, we can say that a real image is formed by a concave mirror and can be obtained on a screen.
Therefore, option (B) is the correct answer.
Note: A plane mirror always forms a virtual and erect image of an object, irrespective of the location of the object. Similar is the case with a convex mirror. In contrast to this, a convex lens forms real images but a concave lens mostly forms virtual images. Students are therefore advised not to confuse mirrors with lenses as images of almost opposite properties are formed by lenses and mirrors.
Complete step by step solution:
A real image is located in the plane of convergence of the light rays originating from a given object. A common example of a real image is the image on a cinema screen (the source being the projector and the screenplays as a diffusely reflecting surface), the image produced on a detector in the rear of a camera, and the image produced on the retina of an eye. In ray diagrams, real images are always represented by full, solid lines; extended rays of light, on the other hand, are represented by dashed lines.
Real images can be produced by a converging lens/mirror, that is, a convex lens or a concave mirror, only if the object is placed away from the focal point of the mirror/lens, and this real image is inverted. As the object approaches the principal focus, the image approaches infinity, and when the object passes the focal point the image becomes virtual and is not inverted (upright image).
From the above discussion, we can say that a real image is formed by a concave mirror and can be obtained on a screen.
Therefore, option (B) is the correct answer.
Note: A plane mirror always forms a virtual and erect image of an object, irrespective of the location of the object. Similar is the case with a convex mirror. In contrast to this, a convex lens forms real images but a concave lens mostly forms virtual images. Students are therefore advised not to confuse mirrors with lenses as images of almost opposite properties are formed by lenses and mirrors.
Recently Updated Pages
Name the scale on which the destructive energy of an class 11 physics JEE_Main
Write an article on the need and importance of sports class 10 english JEE_Main
Choose the exact meaning of the given idiomphrase The class 9 english JEE_Main
Choose the one which best expresses the meaning of class 9 english JEE_Main
What does a hydrometer consist of A A cylindrical stem class 9 physics JEE_Main
A motorcyclist of mass m is to negotiate a curve of class 9 physics JEE_Main
Other Pages
A block of mass 5 kg is on a rough horizontal surface class 11 physics JEE_Main
A pendulum clock keeps the correct time at 20 degrees class 11 physics JEE_Main
If a wire of resistance R is stretched to double of class 12 physics JEE_Main
Derive an expression for maximum speed of a car on class 11 physics JEE_Main
The diagram given shows how the net interaction force class 11 physics JEE_Main
Which of the following meet the requirements of Huckel class 11 chemistry JEE_Main