Advertisements
Advertisements
Question
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?
Advertisements
Solution
A carbon paper is a good absorber of sunlight; hence, it burnt quickly.
RELATED QUESTIONS
Define the following term in the context of spherical mirrors:- Centre of curvature
Which type of mirror can form a real image?
Define Radius of curvature of the 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?
Name the spherical mirror which can produce a virtual and diminished image of an object.
A 50 cm tall object is at a very large distance from a diverging lens. A virtual, erect and diminished image of the object is formed at a distance of 20 cm in front of the lens. How much is the focal length of the lens?
State the types of mirrors used for (i) headlights and (ii) rear view mirror, in cars and motorcycles. Give to justify your answer in each case.
Define the terms focus and focal length of a concave mirror. Draw diagram to illustrate your answer.
What type of mirror can be used to obtain a real image of an 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 virtual and enlarged image
How is the focal length of a spherical mirror related to its radius of curvature?
Does the mirror name by your form a real image for all locations? Give a reason for your answer.
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.
In torches, search lights and headlights of vehicles the bulb is placed ______.
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.
Define the radius of curvature.
