Physics
A ray diagram for a convex lens is shown below. In this manner, a convex lens is used in :
- camera
- cinema
- burning glass
- terrestrial telescope
Related Questions
Which of the ray diagrams are correct ?
1.
2.
3.
4.
Identify the incorrect statement :
- A real image is formed due to actual intersection of the rays refracted by the lens.
- A virtual image can be obtained on the screen.
- A virtual image is erect with respect to the object.
- A real image is inverted with respect to the object.
For an object placed at a distance 20 cm in front of a convex lens, the image is at a distance 20 cm behind the lens. The focal length of the convex lens is:
- 20 cm
- 10 cm
- 15 cm
- 40 cm.
For the object placed between the optical centre and focus of a convex lens, the image is :
- real and enlarged
- real and diminished
- virtual and enlarged
- virtual and diminished