Advertisements
Advertisements
प्रश्न
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?
Advertisements
उत्तर
Let us name the mirrors M1, M2 and M3 as shown below.
From the figure, we see that
- pole (P) is not common.
- centre of curvature (C) is common.
- principal axis (PA) is not common.
- radius of curvature (R) is common. The radius of curvature is the radius of the sphere. In the given figure, the length CP is the same for all mirrors.
APPEARS IN
संबंधित प्रश्न
A 4 cm tall object is placed on the principal axis of a convex lens. The distance of the object from the optical centre of the lens is 12 cm and its sharp image is formed at a distance of 24 cm from it on a screen on the other side of the lens. If the object is now moved a little away from the lens, in which way (towards the lens or away from the lens) will he have to move the screen to get a sharp image of the object on it again? How will the magnification of the image be affected?
Define the following term in the context of spherical mirrors:- Principal focus
An image formed by a ______ mirror is always of the same size as that of the object.
What is the name of the phenomenon in which the right side of an object appears to be the left side of the image in a plane mirror?
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 name is given to the distance between spherical mirror and carbon paper?
Name the spherical mirror which can produce a real and diminished image of an object.
What is a spherical mirror?
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.
Name the kind of mirror used to obtain:
A virtual and diminished image
Name the kind of mirror used to obtain:
A real and diminished image.
(a) When a concave mirror is used as a shaving mirror, where is the person's face in relation to the focus of mirror?
(b) State three characteristics of the image seen in part (a).
At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to the size of the object.
Find the height of the image of a body of height 1.5m in a mirror with a magnification of 1.5.
AB is the object, A'B' is the image, and MM' is the position of the mirror. Complete the ray diagram showing the formation of the image and find the focal length of the mirror.
Define the term Normal.
The distance from the pole to the focus is called ______.
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
