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प्रश्न
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
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उत्तर
All distances are measured from the pole of a spherical mirror.
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संबंधित प्रश्न
Image formed by a convex ______ is always virtual and smaller in size.
Name the spherical mirror which can produce a real and diminished image of an object.
A coin placed at the bottom of a vessel appears to be raised when water is poured in the vessel.
Explain the following terms :
Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors.
Define the following terms in the context of spherical mirrors :
(i) Pole
(ii) Centre of curvature
(iii) Radius of curvature
(iv) Principal axis
Define the terms focus and focal length of a concave mirror. Draw diagram to illustrate your answer.
Draw a ray diagram to show the formation of image by a concave mirror for the object beyond its centre of curvature. State three characteristics of the image.
What type of mirror can be used to obtain a real image of an object?
What is meant by magnification? Write its expression. What is its sign for the (a) real (b) virtual, image?
Is real image always inverted?
What is a mirror formula?
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:
Convex mirror
The spherical mirror with a reflecting surface curved inward is called
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
The image formed in a plane mirror is always inverted.
Define the radius of curvature.
