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प्रश्न
Name the mirror which always produces an erect and virtual image. How is the size of image related to the size of object?
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उत्तर
Convex mirror always produces erect and virtual images. The images formed are diminished, i.e. the size of the image is shorter than the size of the object.
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संबंधित प्रश्न
A 4 cm tall object is placed on the principal axis of a convex lens. The distance of the object from the optical centre of the lens is 12 cm and its sharp image is formed at a distance of 24 cm from it on a screen on the other side of the lens. If the object is now moved a little away from the lens, in which way (towards the lens or away from the lens) will he have to move the screen to get a sharp image of the object on it again? How will the magnification of the image be affected?
Explain the meaning of the terms focus and focal length in case of a convex mirror, with the help of suitable ray diagram.
State the kind of mirror used
(a) By a dentist,
(b) As a search-light reflector.
An object forms a virtual image which is 1/8th of the size of the object. If the object is placed at a distance of 40 cm from the convex mirror, calculate:
- the position of the image
- the focal length of the convex mirror.
A concave mirror can be used to produce a parallel beam of light. Draw a ray to illustrate this.
An object is placed at a distance of 0.25 m
in front of a plane mirror. The distance between the object and image will be ______.
Name the type of mirror used in the following situation:
Side/rear-view mirror of a vehicle
Support your answer with reason.
Define the radius of curvature.
Define the following terms in the context of a diverging mirror:
- Principal focus
- Focal length
Draw a labelled ray diagram to illustrate your answer.
