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प्रश्न
Name the spherical mirror which can produce a real and diminished image of an object.
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उत्तर
Only a concave mirror can produce a real and diminished image of an object.
संबंधित प्रश्न
Define the following term in the context of spherical mirrors:- Principal axis
What is a virtual image?
Give one use each of a concave and a convex mirror.
Define the Focal length of a spherical mirror
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 is the nature of spherical mirror?
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?
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
AB and CD, two spherical mirrors, from parts of a hollow spherical ball with its centre at O as shown in the diagram. If arc AB = `1/2` arc CD, what is the ratio of their focal lengths? State which of the two mirrors will always form virtual image of an object placed in front of it and why.
Complete the following diagrams shown in Fig. by drawing the reflected ray for each of the incident ray A and B.
State the two convenient rays that are chosen to construct the image by a spherical mirror for a given object? Explain your answer with the help of suitable ray diagrams.
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
What is meant by magnification? Write its expression. What is its sign for the (a) real (b) virtual, image?
The magnification for a mirror is -3. How are u and v related?
A concave mirror forms a virtual image of size twice that of the object placed at a distance 5 cm from it. Find:
- the focal length of the mirror
- position of image
Select the correct option:
A mirror forms a virtual image (diminished) of an object, whatever be the position of object:
Define linear magnification produced by a mirror?
The diagram below shows the parallel rays incident on a convex mirror. C is the centre of the curvature of the mirror. By drawing the paths of the reflected rays, label the focus F and hence find the focal length of the mirror.
Complete the following diagrams shown in the following figures by drawing the reflected rays.
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
Define focal length.
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
Assertion: Incident ray is directed towards the centre of curvature of spherical mirror. After reflection it retraces its path.
Reason: Angle of incidence (i) = Angle of reflection (r) = 0°
In normal adjustment, for a refracting telescope, the distance between objective and eye piece is 30 cm. The focal length of the objective, when the angular magnification of the telescope is 2, will be ______.
