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प्रश्न
An erect and enlarged image can be formed by
विकल्प
only a convex mirror.
only a concave mirror.
only a plane mirror.
both convex and concave mirrors.
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उत्तर
only a concave mirror.
Expalantion:
Concave mirror forms a virtual, erect and enlarged image.
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संबंधित प्रश्न
To construct a ray diagram we use two rays of light which are so chosen that it is easy to determine their directions after reflection from the mirror. Choose these two rays and state the path of these rays after reflection from a concave mirror. Use these two rays to find the nature and position of the image of an object placed at a distance of 15 cm from a concave mirror of focal length 10 cm.
For what position of an object, a concave mirror forms a real image equal in size to the object?
Draw the following diagram in your answer book and show the formation of image of the object AB with the help of suitable rays:
Which mirror is used as a torch reflector? Draw a labelled diagram to show how a torch reflector can be used to produce a parallel beam of light. Where is the bulb placed in relation to the torch reflector?
State where an object must be placed so that the image formed by a concave mirror is:
(b) at infinity.
(c) the same size as the object.
An object 3 cm high is placed at a distance of 8 cm from a concave mirror which produces a virtual image 4.5 cm high:
(i) What is the focal length of the mirror?
(ii) What is the position of image?
(iii) Draw a ray-diagram to show the formation of image.
If the object is moved further away from the mirror, what changes are there in the position and size of the image?
Name the mirror which can give:
an erect and enlarged image of an object.
A concave mirror of radius 30 cm is placed in water. It’s focal length in air and water differ by ______.
Which type of mirror is used in the following?
Shaving mirror
