Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
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 image is real and inverted.
Magnification = height of image / height of object.
APPEARS IN
संबंधित प्रश्न
Define the Focal length of a spherical mirror
Define (a) centre of curvature (b) radius of curvature (c) pole (d) principal axis, and (e) aperture, of a spherical mirror with the help of a labelled diagram
What do you understand by the focus and focal length of a spherical mirror? Show them on the separate diagrams for each of a concave mirror and a convex mirror.
Name the kind of mirror used to obtain:
A virtual and diminished image
Answer the following question.
Write the modification in the curvature of the eye lens which enables us to see the nearby objects clearly?
Define the following term in relation to concave mirror.
Pole
Spherical mirrors are one form of ______ mirrors.
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
The minimum length of the mirror required to see the full image of the person is half ‘ of his height.
A converging lens of focal length f is placed at a distance 0.3 m from an object to produce an image on a screen 0.9 m from the lens. With the object and the screen in the same positions, an image of the object could also be produced on the screen by placing a converging lens of focal length.
