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प्रश्न
A concave mirror always forms a real image.
विकल्प
True
False
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उत्तर
This statement is False.
Explanation:
A concave mirror can form both real and virtual images. The nature of the image depends on the distance of the object from the mirror.
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संबंधित प्रश्न
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
A student obtained a sharp image of a burning candle, placed at the farther end of a laboratory table, on a screen using a concave mirror. For getting better value of focal length of the mirror, the subject teacher suggested him for focusing a well illuminated distant object. What should the student do?
(A) He should move the mirror away from the screen.
(B) He should move the mirror slightly towards the screen.
(C) He should move the mirror as well as the screen towards the newly selected object.
(D) He should move only the screen towards the newly selected object.
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.
State two uses of a concave mirror.
For an incident ray directed towards centre of curvature of a spherical mirror the reflected ray:
Select the correct option:
A concave mirror is made by cutting a portion of a hollow glass sphere of radius 30 cm. The focal length of the concave mirror is:
Define the following term:
spherical mirror
What is the focal length (f) of a mirror?
In the figure shown, the image of a real object is formed at the point I. AB is the principal axis of the mirror. The mirror must be:
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.
