1. Which of the following is not a property of a concave lens?
a) Diverging
b) Converging
c) Focusing
d) Magnifying
2. How is the image formed by a concave lens?
a) Real and inverted
b) Virtual and upright
c) Real and upright
d) Virtual and inverted
3. At what distance from the concave lens is the image formed?
a) At the focal point
b) Beyond the focal point
c) Between the lens and the focal point
d) At infinity
4. What is the effect of increasing the distance between the object and a concave lens?
a) The image will become larger
b) The image will become smaller
c) The image will move closer to the lens
d) The image will not be affected
5. Can a concave lens be used to correct hypermetropia?
a) Yes
b) No
c) Sometimes
d) It depends on the strength of the lens
6. What is the relationship between the object distance and the image distance in a concave lens?
a) They are equal
b) They are inversely proportional
c) They are directly proportional
d) There is no relationship
7. What is the nature of the image formed by a concave lens when the object is placed at the focal point?
a) Real and inverted
b) Virtual and upright
c) Real and upright
d) Infinitely large and inverted
8. Can a concave lens be used to magnify an object?
a) Yes
b) No
c) Sometimes
d) It depends on the distance between the lens and the object
9. How does the size of the image change as the object is moved closer to a concave lens?
a) It increases
b) It decreases
c) It remains the same
d) It depends on the strength of the lens
10. What is the effect of increasing the size of a concave lens?
a) The image will become larger
b) The image will become smaller
c) The image will move closer to the lens
d) The image will not be affected
Answers:
- b
- b
- b
- b
- a
- b
- d
- b
- b
- d