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प्रश्न
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 nature of spherical mirror?
उत्तर
The spherical mirror is concave.
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संबंधित प्रश्न
Define the Focal length of a spherical mirror
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
Complete the following diagrams shown in Fig. by drawing the reflected ray for each of the incident ray A and B.
State whether the image in part (a) is real or virtual?
Name the kind of mirror used to obtain :
A real and enlarged image
When an object of height 1 cm is kept at a distance 4 cm from a concave mirror, its erect image of height 1.5 cm is formed at a distance 6 cm behind the mirror. Find the focal length of mirror, by drawing.
Select the correct option:
Which mirror is used in periscope?
The following Figure shows a concave mirror MM' on which a ray of light incident from a point P gets reflected to meet the principle axis at O.
(a) Find, by construction, the position of the centre of curvature of the concave mirror.
(b) Write down the value for the radius of curvature of the mirror.
(c) Calculate the focal length of the mirror.
(d ) Which relation is used in deducing the focal length from the radius of curvature?
