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प्रश्न
What kind of mirror is required for obtaining a virtual image of the same size as the object?
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उत्तर
A plane mirror is required in order to obtain a virtual image of the same size as the object, as this is one of the properties of a plane 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.
What is the relation between the focal length and radius of curvature of a spherical mirror (concave mirror of convex mirror)? Calculate the focal length of a spherical mirror whose radius of curvature is 25 cm.
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.
What is a spherical mirror?
Draw separate diagram for the formation of virtual image of an object by a concave mirror.
A student obtained on a screen the sharp image of a candle flame placed at the farther end of laboratory table using a concave mirror. For getting better value of focal length of the mirror, the teacher suggested to him to focus the sun. What should the student do?
(A) Should move the mirror away from the screen.
(B) Should move the mirror towards the screen.
(C) Should move the mirror and screen both towards the sun.
(D) Should move only the screen towards the sun.
A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting better value of focal length of the mirror, the subject teacher suggested him for focusing a well illuminated distant object. What should the student do?
(A) He should move the mirror away from the screen.
(B) He should move the mirror slightly towards the screen.
(C) He should move the mirror as well as the screen towards the newly selected object.
(D) He should move only the screen towards the newly selected object.
What type of mirror can be used to obtain a real image of an object?
Name the kind of mirror used to obtain:
A real and diminished image.
How is the focal length of a spherical mirror related to its radius of curvature?
What is meant by magnification? Write its expression. What is its sign for the (a) real (b) virtual, image?
State two uses of a concave mirror.
The image formed by a convex mirror is of size one third the size of object. How are u and v related?
Define the following term:
concave mirror
What do you understand by the term real image?
Define the term Focus of a concave mirror.
A concave mirror can be used to produce a parallel beam of light. Draw a ray to illustrate this.
What is the focal length (f) of a mirror?
