Important Terms Related to Spherical Mirror
Trending Questions
Define the pole, the center of curvature, the radius of curvature, principal axis, aperture, focus, and focal length of a spherical mirror.
Define the principal focus of a concave mirror.
Define the principle focus of a concave mirror.
Define radius of curvature.
(a) Draw a labelled ray diagram to show the formation of image of an object by a convex mirror. Mark clearly the pole, focus and centre of curvature on the diagram. (b) What happens to the image when the object is moved away from the mirror gradually ? (c) State three characteristics of the image formed by a convex mirror.
Name the spherical mirror which has : (a) virtual principal focus. (b) real principal focus.
Define focal length of a spherical mirror.
What is the difference between TIR and normal reflection?
Out of convex mirror and concave mirror, whose focus is situated behind the mirror ?
Fill in the following blanks with suitable words :
(a) Parallel rays of light are reflected by a concave mirror to a point called the ___.
(b) The focal length of a concave mirror is the distance from the ___ to the mirror.
(c) A concave mirror ___rays of light whereas a convex mirror___rays of light.
(d) For a convex mirror, parallel rays of light appear to diverge from a point called the___.
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.
Differentiate between Incident ray and reflected ray:
A concave mirror of small aperture forms a sharper image.
- True
- False
Name the type of a spherical mirror which always forms a virtual, erect and diminished image. What is the position of such type of images with respect to the mirror? Draw a ray diagram for the same.
The perpendicular line drawn on the surface of a mirror at the point of incidence is called the incident ray.
- True
- False
The angle formed between the incident ray and the normal is called______________.
Give the name for a light ray which strikes the reflecting surface.
Identify the type of lens or mirror placed at XY where O is object and I is image. (O is place between pole and focus)
The center of the reflecting surface of a spherical mirror is called _______.
From a spherical mirror, 3 separate concave mirrors are cut out and placed as shown. Find the total number of images of the sun that is formed by the setup.
3
infinity
1
0
Explain the following terms.
Point of incidence
(a) Draw a labelled ray diagram to show the formation of image of an object by a convex mirror. Mark clearly the pole, focus and centre of curvature on the diagram. (b) What happens to the image when the object is moved away from the mirror gradually ? (c) State three characteristics of the image formed by a convex mirror.
Differentiate between incident ray and reflected ray.
A concave mirror is held in water. What would be the change in the focal length of the mirror? [1 MARK]
If a mirror forms highly enlarged, real and inverted image, choose the position of object and mirror used to form above image.
not possible to form such an image
concave, at focus point
convex, at focus point
concave, at centre of curvature
The focal length of a concave mirror in the air is f. If it is immersed in water , then the focal length will be:
The angle between the incident ray and the normal at the point of incidence is known as the angle of ___________.
A thin rectangular silver sheet acts as a plane mirror. A person who can see his face in it, holds it vertically, such that the length of the sheet is perpendicular to the ground. How does his image in the silver sheet change if the sheet is bent in a semi-circular way,
(a) along the length such that it bulges towards the face.
(b) along the length such that it bulges away from the face.
(c) along the breadth such that it bulges towards the face.
(d) along the breadth such that it bulges away from the face.
An angle between the incident ray and the normal. (Write the name)
