Advertisements
Advertisements
प्रश्न
Explain the following term related to spherical lenses:- aperture
Advertisements
उत्तर
Aperture:-
The diameter of sphere of part of which a lens is formed is called the aperture.
संबंधित प्रश्न
We can obtain a real, enlarged and inverted image by a concave mirror.
The letter F is placed in front of a plane mirror:
What is the name of the phenomenon involved?
A small object is placed 150 mm away from a diverging lens of focal length 100 mm.
(i) Copy the figure below and draw rays to show how an image is formed by the lens.
Figure
(ii) Calculate the distance of the image from the lens by using the lens formula.
Complete the following diagrams in Figure by drawing the reflected rays for the incident rays 1 and 2.
Complete the following diagrams shown in Fig. by drawing the reflected ray for each of the incident ray A and B.
For what position of object, the image formed by a concave mirror is magnified and erect?
Write two more characteristics of the image.
What is meant by magnification? Write its expression. What is its sign for the (a) real (b) virtual, image?
Draw a ray diagram to show that a convex mirror has a wider field of view.
