Advertisements
Advertisements
Question
In the following diagram , the object and the image formed by the respective lenses are shown. Complete the ray diagram, and locate the focus. Find the focal length of the lens.
Solution
APPEARS IN
RELATED QUESTIONS
Explain optical centre of a lens with the help of proper diagram(s).
State the condition when a lens is called an equi-convex or equi-concave.
In figure, (a) and (b), F1 and F2 are the two foci of thin lenses and AB is the incident ray. Complete the diagram to show the path of the ray AB after refraction through each lens.
 |
| (a) |
 |
| (b) |
Study the diagram shown in Fig. 5.56
Where is the image formed?
Study the diagram shown in Fig. 5.56
what are the two other characteristics of the image?
State the condition of the following:
A lens has both its focal lengths equal.
State the condition of the following:
A ray passes undeviated through the lens.
What type of lenses are used in spectacles worn by an old lady for knitting?
Make the correct choices in the following items :
The image formed by a diverging lens, shown in fig, , is
Define the term 'focus' of a lens.
