Advertisements
Advertisements
प्रश्न
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
What happens when a ray of light falls normally (or perpendiculary) on the surface of a plane mirror?
A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection?
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What name is given to the distance between spherical mirror and carbon paper?
Which are the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain with the help of suitable ray diagrams.
The image formed by a convex mirror is
Choose the correct alternative and rewrite the following:
Mirror used by a dental surgeon is ..........................
Define the term principal focus in case of convex mirror. Draw a convex mirror and show its principal focus and focal length clearly.
An object 10 cm high is placed at a distance of 20 cm in front of a spherical mirror of focal length 25 cm. By scale drawing find the nature, position, and magnification of the image in the following case:
Concave mirror
Which of the following has curved reflecting surface?