Advertisements
Advertisements
प्रश्न
An object AB is placed between O and F1 on the principal axis of a converging lens as shown in the diagram.
Copy the diagram and by using three standard rays starting from point A, obtain an image of the object AB.
उत्तर
APPEARS IN
संबंधित प्रश्न
"A lens can form a magnified erect image as well as magnified inverted image of an object placed in front of it." State the nature of this lens and draw ray diagrams to justify the above statement. Mark the positions of O, F and 2F in the diagram.
Describe with the help of a ray-diagram, the formation of image of a finite object placed in front of convex lens between f and 2f. Give two characteristics of the image so formed.
If the object is moved to a point only 3 cm away from the lens, what is the new position, height and nature of the image?
A lens forms an upright and magnified image of an object. Name the lens.
Out of the five incident rays shown in the figure find the three rays that are obeying the laws of refraction and may be used for locating the position of image formed by a convex lens:
(A) 1, 2 and 3
(B) 2, 3 and 4
(C) 3, 4 and 5
(D) 1, 2 and 4
List four properties of the image formed by a convex mirror.
The image obtained while finding the focal length of convex lens is ....................
Observe the following figure and answer the questions.
a) Which optical instrument shows arrangement of lenses as shown in the figure?
b) Write in brief the working of this optical instrument.
c) How can we get different magnifications in this optical instrument?
d) Draw the figure again and labelled it properly
State the position of object, position of image, nature of image when: Convex lens is used as objective lens of astronomical telescope.
Distinguish between:
Concave lens and Convex lens
