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प्रश्न
Name the two types of spherical mirrors. What type of mirror is represented by the:
back side of a shining steel spoon?
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उत्तर
The types of spherical mirrors represented by the
back side of a shining steel spoon is convex mirror, and
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संबंधित प्रश्न
Define the following term in the context of spherical mirrors:- Principal focus
Image formed by a convex ______ is always virtual and smaller in size.
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 name is given to the distance between spherical mirror and carbon paper?
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
State whether this spherical mirror will diverge or converge light rays.
A lens forms a real image 3 cm high of an object 1 cm high. If the separation of object and image is 15 cm, find the focal length of the lens.
A small object is placed 150 mm away from a diverging lens of focal length 100 mm.
(i) Copy the figure below and draw rays to show how an image is formed by the lens.
Figure
(ii) Calculate the distance of the image from the lens by using the lens formula.
The diverging lens in part (a) is replaced by a converging lens also of focal length 100 mm. The object remains in the same position and an image is formed by the converging lens. Compare two properties of this image with those of the image formed by the diverging lens in part (a).
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.
Write two more characteristics of the image.
Name the kind of mirror used to obtain:
A virtual and diminished image
What do you understand by the term real image?
Is real image always inverted?
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
A shopkeeper wanted to fix a mirror which will give a maximum view of his shop. What type of mirror should he use? Give reason.
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
A ray of light is incident towards a plane mirror at an angle of 30° with the mirror surface. What will be the angle of reflection?
