Advertisements
Advertisements
Question
Advertisements
Solution
Linear magnification is defined as the ratio of the height of the image to the height of the object. It is taken to be positive for an image to be virtual and erect and negative when the image is real and inverted.
Magnification produced by a concave mirror is:
Magnification = height of image / height of object.
It is a pure ratio and does not have any units.
APPEARS IN
RELATED QUESTIONS
Explain the following term related to spherical lenses: focal length
Image formed by a convex ______ is always virtual and smaller in size.
The letter F is placed in front of a plane mirror:
What is the name of the phenomenon involved?
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.
Name the mirror which always produces an erect and virtual image. How is the size of image related to the size of object?
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.
An object of length 4 cm is placed in front of a concave mirror at distance 30 cm. The focal length of mirror is 15 cm.
- Where will the image form?
- What will be the length of image?
Geometric centre of the spherical mirror is ______.
