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प्रश्न
Answer the following question:
Distinguish between the convex mirror and the concave mirror.
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उत्तर
Convex mirror and concave mirror.
| Convex mirror | Concave mirror | |
| 1. | It is called a diverging mirror. | It is called a converging mirror. |
| 2. | The light is reflected from the outer surface. | The light is reflected from the inner surface. |
| 3. | It can form only a virtual image | It can form a real image as well as a virtual image. |
| 4. | According to sign convention, the focal length is positive. | According to sign convention, the focal length is negative. |
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- aperture
An image that cannot be obtained on a screen is called ______.
A virtual image larger than the object can be produced by a ______.
A ray of light strikes a plane mirror at an angle of 40° to the mirror surface. What will be the angle of reflection?
A ray of light is incident normally on a plane mirror. What will be the:
- angle of incidence?
- angle of reflection?
A ray of light travels from a denser medium to a rarer medium. How will it bend?
Draw a ray diagram to show the formation of image by a concave mirror for an object placed between its pole and focus. State three characteristics of the image.
What is meant by magnification? Write its expression. What is its sign for the (a) real (b) virtual, image?
Why does a driver use a convex mirror instead of a plane mirror as a rear view mirror?
Illustrate your answer with the help of a ray diagram.
An object of height 2 cm is placed at a distance of 20 cm in front of a concave mirror of a focal length of 12 cm. Find the position, size, and nature of the image.
Select the correct option:
A mirror forms a virtual image (diminished) of an object, whatever be the position of object:
Define the following term in relation to concave mirror.
Principal axis
Define the following term in relation to concave mirror.
Principal focus
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
Visit a nearby hospital. You can also visit the clinic of an ENT specialist, or a dentist. Request the doctor to show you the mirrors used for examining ear, nose, throat and teeth. Can you recognise the kind of mirror used in these instruments?
