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प्रश्न
______ is used as reflectors in torchlight.
विकल्प
Concave mirror
Plane mirror
Convex mirror
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उत्तर
Concave mirror is used as reflectors in torchlight.
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संबंधित प्रश्न
Fill in the following blank with suitable word:
The focal length of a concave mirror is the distance from the ......... to the mirror.
If an object is at infinity (very large distance) in front of a concave mirror, where is the image formed?
Giving reasons, state the 'signs' (positive or negative) which can be given to the following:
(a) object distance (u) for a concave mirror or convex mirror
(b) image distance (v) for a concave mirror
(c) image distance (v) for a convex mirror
The image formed by a concave mirror is of the same size as the object, if the object is placed
Draw a ray diagram to show the formation of image of an object placed at the centre of curvature of a concave mirror. State the position, size and nature of the image.
To construct ray diagram we use two light rays which are so chosen that it is easy to know their directions after reflection from the mirror. List these two rays and state the path of these rays after reflection. Use these rays to locate the image of an object placed between centre of curvature and focus of a concave mirror.
A student has to trace the path of a ray of light passing through a rectangular glass slab for four different values of angle of incidence.
(a) Write two important precautions for this experiment.
(b) List two conclusions the student will draw based on his experiment.
Give any two applications of a concave and convex mirror.
Concave mirrors are used by dentists to examine teeth. Why?
You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from
