Advertisements
Advertisements
Question
A student obtained on a screen the sharp image of a candle flame placed at the farther end of laboratory table using a concave mirror. For getting better value of focal length of the mirror, the teacher suggested to him to focus the sun. What should the student do?
(A) Should move the mirror away from the screen.
(B) Should move the mirror towards the screen.
(C) Should move the mirror and screen both towards the sun.
(D) Should move only the screen towards the sun.
Advertisements
Solution
Initially, the screen was placed beyond the focus to capture the image of the candle flame placed at a finite distance from the mirror. So, in order to capture a bright image of the Sun (at infinity) on the screen, the student should move the mirror towards the screen.
Hence, the correct option is B.
APPEARS IN
RELATED QUESTIONS
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?
Write the mirror formula. Give the meaning of each symbol which occurs in it.
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
- What will be the focal length of this mirror?
- Which type of spherical mirror will it provide?
- State whether this spherical mirror will diverge or converge light rays.
How is the focal length of a spherical mirror related to its radius
Upto what maximum distance from the pole the image in a convex mirror can be obtained? what will be the location of object then ?
The magnification for a mirror is -3. How are u and v related?
Define linear magnification produced by a mirror?
An object is placed at a distance of 0.25 m
in front of a plane mirror. The distance between the object and image will be ______.
The minimum length of the mirror required to see the full image of the person is half ‘ of his height.
Explain why a ray of light passing through the center of curvature of a concave mirror, gets reflected along with the same pattern.
