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प्रश्न
Name the kind of mirror used to obtain
(a) a real and enlarged image
(b) a virtual and enlarged image
(c) a real and diminished image, and
(d) a virtual and diminished image.
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उत्तर
a) Concave
b) Concave
c) Concave
d) Convex
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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?
Image formed by a convex ______ is always virtual and smaller in size.
An image formed by a ______ mirror is always of the same size as that of the object.
What type of image is formed:
- in a plane mirror?
- on a cinema screen?
An object of height 2 cm is placed at a distance of 20 cm in front of a concave mirror of a focal length of 12 cm. Find the position, size, and nature of the image.
Define the following term in relation to concave mirror.
Focal length
AB is the object, A1B1 is its image. MM' is the position of the mirror. Complete the ray diagram and find the position of the center of curvature and focus of the mirror. Also, measure the focal length.
A concave mirror can be used to produce a parallel beam of light. Draw a ray to illustrate this.
The distance from the pole to the focus is called ______.
A shopkeeper wanted to fix a mirror which will give a maximum view of his shop. What type of mirror should he use? Give reason.
