Medium
The figure below shows an object $AB$ placed on the principal axis of a lens $L$. The two foci of the lens are $F_1$ and $F_2$. The image formed by the lens is erect,virtual and diminished. Copy the diagram and answer the following questions: $(i)$ Draw the outline of the lens $(L)$ used. $(ii)$ Draw a ray from $B$ passing through $O$. Show the ray after refraction by the lens. $(iii)$ Draw a ray of light starting from $B$,which after passing parallel to the principal axis,is incident on the lens and emerges after refraction from it. $(iv)$ Locate the final image formed.
(N/A) The lens used is a concave lens because it forms an erect,virtual,and diminished image for an object placed anywhere in front of it.
$(i)$ The outline of the concave lens is drawn at the position $L$.
(ii) $A$ ray from $B$ passing through the optical center $O$ goes undeviated.
(iii) $A$ ray from $B$ parallel to the principal axis,after refraction,appears to diverge from the focus $F_2$.
(iv) The final image $A'B'$ is formed between the optical center $O$ and the focus $F_2$ on the same side as the object.
$(i)$ The outline of the concave lens is drawn at the position $L$.
(ii) $A$ ray from $B$ passing through the optical center $O$ goes undeviated.
(iii) $A$ ray from $B$ parallel to the principal axis,after refraction,appears to diverge from the focus $F_2$.
(iv) The final image $A'B'$ is formed between the optical center $O$ and the focus $F_2$ on the same side as the object.
Explore More
Similar Questions
$A$ convex lens of focal length $20 \, cm$ can produce a magnified virtual as well as real image. Is this a correct statement? If yes,where shall the object be placed in each case for obtaining these images?
Medium
View Solution$A$ point object emits rays in all directions. Consider a ray emitted from the object that is parallel to the principal axis of the mirror. One of the points required to trace the reflected ray is the point of incidence itself,as shown in the figure. Select a point from the given figure through which the reflected ray passes.
Where should an object be placed in front of a concave mirror to obtain an inverted and magnified image?
Easy
View SolutionThe focal length of a concave mirror is $30 \, cm$. Find the position of the object in front of the mirror so that the image is three times the size of the object.
Difficult
View SolutionWhy does a light ray incident on a rectangular glass slab immersed in any medium emerge parallel to itself? Explain.
Difficult
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo