Advertisements
Advertisements
प्रश्न
Answer the following question:
Distinguish between the convex mirror and the concave mirror.
Advertisements
उत्तर
Convex mirror and concave mirror.
| Convex mirror | Concave mirror | |
| 1. | It is called a diverging mirror. | It is called a converging mirror. |
| 2. | The light is reflected from the outer surface. | The light is reflected from the inner surface. |
| 3. | It can form only a virtual image | It can form a real image as well as a virtual image. |
| 4. | According to sign convention, the focal length is positive. | According to sign convention, the focal length is negative. |
APPEARS IN
संबंधित प्रश्न
A student obtains a sharp image of the distant window (W) of the school laboratory on the screen (S) using the given concave mirror (M) to determine its focal length. Which of the following distances should he measure to get the focal length of the mirror?
Define the following term in the context of spherical mirrors:- Pole
Explain the following term related to spherical lenses:- aperture
An image formed by a ______ mirror is always of the same size as that of the object.
We can obtain an enlarged and erect image by a convex mirror.
What type of image is formed:
on a cinema screen?
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What is the advantage of using a carbon paper rather than a white paper?
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
- What will be the focal length of this mirror?
- Which type of spherical mirror will it provide?
- State whether this spherical mirror will diverge or converge light rays.
How is the focal length of a spherical mirror related to its radius
Define the following terms in the context of spherical mirrors :
(i) Pole
(ii) Centre of curvature
(iii) Radius of curvature
(iv) Principal axis
Mention the types of mirrors used as (i) rear view mirrors, (ii) shaving mirrors. List two reasons to justify your answers in each case.
Three mirrors are created from a single sphere. Which of the following - pole, centre of curvature, radius of curvature, principal axis - will be common to them and which will not be common?
Name the mirrors shown in Figure (a) and (b).
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
Draw a ray diagram to show the formation of the image, when the object is placed between optical centre and principal focus of a convex lens.
State the signs and values of magnifications in the above mentioned case.
Define the following term in relation to concave mirror.
Center of curvature
Complete the following diagrams shown in the following figures by drawing the reflected rays.
Define the term Principle focus.
An object is placed in front of a concave mirror as shown in the following figure. By scale drawing, find the nature of the image. Given f = 10 cm, v = 30 cm.
