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प्रश्न
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.
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उत्तर
Concave mirrors are used for headlights as it gives larger area of magnification for the light. Convex mirrors give a virtual, erect, and diminished image of the objects placed in front of them. They are preferred as a rear-view mirror in vehicles because they give a wider field of view, which allows the driver to see most of the traffic behind him.
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संबंधित प्रश्न
Write true or false
A virtual image formed by a spherical mirror is always erect and situated behind the mirror.
State the direction of incident ray which after reflection from a spherical mirror gets reflected along its own path. Give a reason.
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.
Complete the following diagrams shown in Fig. by drawing the reflected ray for each of the incident ray A and B.
Write two more characteristics of the image.
At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to the size of the object.
Is real image always inverted?
Define the term Normal.
The spherical mirror used in a beauty parlour as make-up mirror is _______.
A spherical mirror whose reflecting surface is curved outwards is called ______ mirror.
