Quiz Test
1. The image formed by a convex mirror is always
2. The focal length of a convex lens is 15 cm. The image of an object placed 30 cm away from lens will be
3. Q. The image of an object placed between the pole and the focus of a concave mirror is formed
4. Which mirror should be used to form an apparent and enlarged image of an object?
5. Which lens should be used to form an apparent and enlarged image of an object?
6. A ray of light incident on a concave mirror retraces its path after reflection from the mirror. The ray intersects principal axis at
7. A lens for certain position of the object forms an imaginary, erect and magnified image of the object. The lens will be (1)
8. A convex lens of focal length 10 cm forms a real image of the same size as the object. The distance between the object and its image will be
9. The magnification produced by a convex mirror is always
10. The focal length of a converging lens is 20 cm. The power of this lens will be
11. Which of the following lenses should be used to read small letters?
12. The image formed by a convex mirror of an object placed at infinity is
13. From which lens the image of object formed is virtual, erect and smaller than the object?
14. In a spherical mirror, the distance between its centre of curvature and pole is 20 cm. What is the distance of focus from the pole of mirror?
15. In a spherical mirror, the distance between its centre of curvature and pole is 20 cm. What is the distance of focus from the pole of mirror?