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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.
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संबंधित प्रश्न
An image formed by a ______ mirror is always of the same size as that of the object.
Define Radius of curvature of the spherical mirror
What type of image is formed:
in a plane mirror?
Name the spherical mirror which can produce a virtual and diminished image of an object.
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
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
If a spherical mirror breaks, what type of mirrors are the individual pieces?
The letters on the front of an ambulance are written laterally inverted like 
. Give reason.
What is a spherical mirror?
Define the terms focus and focal length of a concave mirror. Draw diagram to illustrate your answer.
Name the kind of mirror used to obtain:
A virtual and enlarged image
Why does a driver use a convex mirror instead of a plane mirror as a rear view mirror?
Illustrate your answer with the help of a ray diagram.
Select the correct option:
Which mirror is used in periscope?
Define the following term:
spherical mirror
Define the following term in relation to concave mirror.
Pole
Define linear magnification produced by a mirror?
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
Name the type of mirror used in the following situation:
Side/rear-view mirror of a vehicle
Support your answer with reason.
A converging lens of focal length f is placed at a distance 0.3 m from an object to produce an image on a screen 0.9 m from the lens. With the object and the screen in the same positions, an image of the object could also be produced on the screen by placing a converging lens of focal length.
