Advertisements
Advertisements
प्रश्न
Define the term Aperture.
Advertisements
उत्तर
Aperture is the distance between the extreme points on the periphery of the mirror.
APPEARS IN
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?
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.
What is a spherical mirror?
The image formed by a convex mirror is
A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find
- the focal length of mirror
- position of image.
Define the following term:
concave mirror
Find the height of the image of a body of height 1.5m in a mirror with a magnification of 1.5.
How tall does a mirror have to be to fit an entire person’s body?
