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प्रश्न
If a spherical mirror breaks, what type of mirrors are the individual pieces?
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उत्तर
After the breakdown of the spherical mirror, each piece of the mirror is the same type of original mirror (concave/convex), as the reflective background and curvature have no differences in radius.
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संबंधित प्रश्न
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.
A concave lens produces an image 20 cm from the lens of an object placed 30 cm from the lens. The focal length of the lens is:
(a) 50 cm
(b) 40 cm
(c) 60 cm
(d) 30 cm
What do you understand by the focus and focal length of a spherical mirror? Show them on the separate diagrams for each of a concave mirror and a convex mirror.
State the direction of incident ray which after reflection from a spherical mirror gets reflected along its own path. Give a reason.
Name the kind of mirror used to obtain
(a) a real and enlarged image
(b) a virtual and enlarged image
(c) a real and diminished image, and
(d) a virtual and diminished image.
Draw a ray diagram to show the formation of image by a concave mirror for an object placed between its pole and focus. State three characteristics of the image.
How is the focal length of a spherical mirror related to its radius of curvature?
Which mirror will you prefer to use as a rear view mirror in a car : plane mirror or convex mirror? Give one reason.
Draw a ray diagram to show the formation of image of an object kept in front of a convex mirror. State three characteristics of the image.
The image formed by a convex mirror is of size one third the size of object. How are u and v related?
An object 5 cm high is placed at a distance 60 cm in front of a concave mirror of focal length 10 cm. Find the position and size of the image.
Define the following term:
convex mirror
Is real image always inverted?
The following figure shows a concave mirror with its pole (P), focus (F), and center of curvature (C). Draw a ray diagram to show the formation of the image of an object AB by the concave mirror.
Size of image of an object by a mirror having a focal length of 20 cm is observed to be reduced to 1/3rd of its size. At what distance the object has been placed from the mirror? What is the nature of the image and the mirror?
