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प्रश्न
Give two uses of concave mirror.
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उत्तर
Two uses of concave mirror are:
(a) Concave mirror is used as A Reflector in head lights of cars and in search light. The source of light (bulb) is placed at the principal focus and the reflector forms parallel beam of light.
(b) For doctors to examine throat, ear, nose, and eyes, light is focused on the help of a concave mirror.
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संबंधित प्रश्न
Define Regular reflection.
An object 1.5 cm high when placed in front of a concave. the mirror produces a virtual image 3 cm high. If the object is placed at a distance of 6 cm from the pole of the mirror, calculate:
- the position of the image
- the focal length of the mirror.
Draw a neat two ray diagram to illustrate how a concave mirror is used as a shaving mirror.
Identify the following kind of beam of light.
Complete the ray diagram to show the image observed by the eye after reflection in the following figure.
Higher Order Thinking Skills.
When a ray of light passes from air into glass, is the angle of refraction greater than or less than the angle of incidence?
Suppose we wish to obtain the real image of a distant tree. Explain two possible ways in which we can do it.
We can see objects because of ______.
