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प्रश्न
Select the correct option:
A mirror forms a virtual image (diminished) of an object, whatever be the position of object:
विकल्प
it must be a concave mirror
it must be a convex mirror
it must be a plane mirror
it may be convex mirror or plane mirror
उत्तर
it must be a convex mirror
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संबंधित प्रश्न
A student focused the Sun rays using an optical device 'X' on a screen S as shown.
From this it may be concluded that the device 'X' is a (select the correct option)
(A) Convex lens of focal length 10 cm.
(B) Convex lens of radius of curvature 20 cm.
(C) Convex lens of focal length 20 cm.
(D) Concave mirror of focal length 20 cm.
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.
At which point of the spherical mirror the carbon paper is placed?
Mention the types of mirrors used as (i) rear view mirrors, (ii) shaving mirrors. List two reasons to justify your answers in each case.
Define the terms pole, principal axis and centre of curvature with reference to a spherical mirror.
Define the following term in relation to concave mirror.
Principal focus
In the following figure shows a concave mirror with its pole (P), focus (F) and centre of curvature (C). Draw a ray diagram to show the formation of the image of an object AB by the concave mirror.
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.
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.
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
