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प्रश्न
Give two uses of concave mirror.
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
Draw a figure showing the following.
- Incident Ray
- Normal
- Angle of incidence
- Angle of reflection
- Point of incidence
- Reflected ray
State three ways in which the image formed in a plane mirror differs from the image formed in a pin hole camera.
Draw a neat two ray diagram to illustrate how a concave mirror is used as a shaving mirror.
State whether the following statement is true or false. If false, correct it.
The angle of incidence is the angle made by the incident ray with the plane mirror.
State whether the following statement is true or false. If false, correct it.
If the incident ray makes an angle of Xo with the normal, then the reflected ray is 2Xo.
Complete the ray diagram to show the image observed by the eye after reflection in the following figure.
Which of the following ray diagrams is correct for the ray of light incident on a lens shown in figure?
 |
 |
| A | B |
 |
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| C | D |
A beam of light is incident through the holes on side A and emerges out of the holes on the other face of the box as shown in the Figure. Which of the following could be inside the box?
