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प्रश्न
Name the spherical mirror which can produce a real and diminished image of an object.
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उत्तर
Only a concave mirror can produce a real and diminished image of an object.
संबंधित प्रश्न
Explain the following term related to spherical lenses:- aperture
What is a virtual image?
A ray of light is incident normally on a plane mirror. What will be the
angle of incidence?
A ray of light is incident normally on a plane mirror. What will be the
angle of reflection?
Name the two types of spherical mirrors. What type of mirror is represented by the:
back side of a shining steel spoon?
A lens forms a real image 3 cm high of an object 1 cm high. If the separation of object and image is 15 cm, find the focal length of the lens.
A 50 cm tall object is at a very large distance from a diverging lens. A virtual, erect and diminished image of the object is formed at a distance of 20 cm in front of the lens. How much is the focal length of the lens?
What do you understand by the focus and focal length of a spherical mirror? Show them on the separate diagrams for each of a concave mirror and a convex mirror.
State the kind of mirror used
(a) by a dentist, and
(b) as a street light reflector.
Define the following terms in the context of spherical mirrors :
(i) Pole
(ii) Centre of curvature
(iii) Radius of curvature
(iv) Principal axis
State the types of mirrors used for (i) headlights and (ii) rear view mirror, in cars and motorcycles. Give to justify your answer in each case.
The letters on the front of an ambulance are written laterally inverted like 
. Give reason.
State the number of images of an object placed between two mirrors, formed in each case when mirrors are inclined to each other at (a) 90°, and (b) 60°.
Draw a ray diagram to show the formation of image by a concave mirror for the object beyond its centre of curvature. State three characteristics of the image.
State whether the image in part (a) is real or virtual?
Name the kind of mirror used to obtain :
A real and enlarged image
A real and enlarged image can be obtained by using a
The erect image formed by a concave mirror is of size double the size of object. How are u and v related?
Select the correct option:
Which mirror is used in periscope?
Find the height of the image of a body of height 1.5m in a mirror with a magnification of 1.5.
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.
Define the term Normal.
Draw a ray diagram to show that a convex mirror has a wider field of view.
An object 10 cm high is placed at a distance of 20 cm in front of a spherical mirror of focal length 25 cm. By scale drawing find the nature, position, and magnification of the image in the following case:
Convex mirror
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?
Size of image of an object by a mirror having a focal length of 20 cm is observed to be reduced to 1/3rd of its size. At what distance the object has been placed from the mirror? What is the nature of the image and the mirror?
Visit a nearby hospital. You can also visit the clinic of an ENT specialist, or a dentist. Request the doctor to show you the mirrors used for examining ear, nose, throat and teeth. Can you recognise the kind of mirror used in these instruments?
