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प्रश्न
Identify the device used as a spherical mirror or lens in following case, when the image formed is virtual and erect in case.
Object is placed between the focus and device, image formed is enlarged and on the same side as that of the object.
उत्तर
The device is Convex lens.
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संबंधित प्रश्न
If the image formed by a mirror for all positions of the object placed in front of it is always diminished, erect and virtual, state the type of the mirror and also draw a ray diagram to justify your answer. Write one use such mirrors are put to and why.
What is meant by (i) principal focus of a convex mirror, and (ii) focal length of a convex mirror?
Which type of mirror has:
negative focal length?
Why can you not use a concave mirror as a rear-view mirror in vehicles?
An object is placed at a distance of 10 cm from a convex mirror of focal length 5 cm.
(a) Draw a ray-diagram showing the formation image
(b) State two characteristics of the image formed
(c) Calculate the distance of the image from mirror.
A shop security mirror 5.0 m from certain items displayed in the shop produces on-tenth magnification.
What is the type of mirror?
Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed:
between F1 and the optical centre O of the lens.
Which of the above two cases shows the use of convex lens as a magnifying glass? Give reasons for your choice.
State two uses of a convex mirror.
When the reflecting surface is curved outwards the mirror formed will be ______.
