Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
APPEARS IN
संबंधित प्रश्न
How many images will be formed when an object is placed between two parallel plane mirrors with their reflecting surfaces facing each other? Why do more distant images appear fainter?
An object 3 cm high produces a real image 4.5 cm high when placed at a distance of 20 cm from a concave mirror. Calculate:
- the position of image
- focal length of the concave mirror.
Copy the figure. By taking two rays from point A, show the formation of image. State four characteristics of the image.
State whether the following statement is true or false. If false, correct it.
If a ray of light incident on a plane mirror is such that it makes an angle of 30o with the mirror, then the angle of reflection is 60o.
Light that hits a mirror gets ______.
Which of the following is the best reflector of light?
Materials which reflect the light well are called ______.
Match the following:
| 1. | Rubber | a. | Erect |
| 2. | Greased paper | b. | Inverted |
| 3. | Real image | c. | Opaque medium |
| 4. | Virtual image | d. | Translucent medium |
