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प्रश्न
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 advantage of using a carbon paper rather than a white paper?
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उत्तर
A carbon paper is a good absorber of sunlight; hence, it burnt quickly.
संबंधित प्रश्न
A student used a device (X) to obtain/focus the image of a well illuminated distant building on a screen (S) as shown below in the diagram. Select the correct statement about the device (X).
An image that cannot be obtained on a screen is called ______.
We can obtain an enlarged and erect image by a convex mirror.
The letter F is placed in front of a plane mirror:
What is the name of the phenomenon involved?
Name the spherical mirror which has:
(a) virtual principal focus.
(b) real principal focus.
Mention the types of mirrors used as (i) rear view mirrors, (ii) shaving mirrors. List two reasons to justify your answers in each case.
Explain the following term:
Incident ray
Draw diagram/diagrams to show them.
Name the mirror which always produces an erect and virtual image. How is the size of image related to the size of object?
Discuss the position and nature of image formed by a convex mirror when an object is moved from infinity towards the pole of mirror.
Name the kind of mirror used to obtain:
A real and diminished image.
Choose the correct alternative and rewrite the following:
Mirror used by a dental surgeon is ..........................
Define the following term in relation to concave mirror.
Principal focus
AB is the object, A'B' is the image, and MM' is the position of the mirror. Complete the ray diagram showing the formation of the image and find the focal length of the mirror.
The spherical mirror with a reflecting surface curved inward is called
Spherical mirrors are one form of ______ mirrors.
For a spherical mirror, ______ is true.
The distance from the center of curvature of the mirror to the pole is called the focal length of the mirror.
