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प्रश्न
Give two uses of concave mirrors. Explain why you would choose concave mirrors for these uses.
उत्तर
Two uses of concave mirrors are:
- Shaving mirrors
- By dentists, to see the teeth of patients
The reason being, an enlarged image of an object is seen when it is held within the focus of a concave mirror.
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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.
Fill in the following blank with suitable word:
A concave mirror .......... rays of light whereas convex mirror ............ rays
Which kind of mirror is used in the headlights of a car? Why is it used for this purpose?
Make labelled ray diagrams to illustrate the formation of:
a real image by a converging mirror.
The focal length of a small concave mirror is 2.5 cm. In order to use this concave mirror as a dentist's mirror, the distance of tooth from the mirror should be:
(a) 2.5 cm
(b) 1.5 cm
(c) 4.5 cm
(d) 3.5 cm
Draw and complete the following diagrams to show what happens to the beams of light as they enter the glass block and then leave it:
Study the following ray diagram and list two mistakes committed by the student while tracing it. Rectify these mistakes by drawing the correct ray diagram to show the real position and size of the image corresponding to the position of the object AB.
A child is standing in front of a magic mirror. She finds the image of her head bigger, the middle portion of her body of the same size and that of the legs smaller. The following is the order of combinations for the magic mirror from the top.
The image formed by a concave mirror is real, inverted and of the same size as that of the object, the position of the object should be ______.
Write the uses of the concave mirror.
