State, true or false. If false, write the correct statement.

1. A simple microscope is sometimes known as a reading glass.
2. The image formed by a magnifying glass is real and enlarged.
3. While using a simple microscope, the object is kept between F and O.
4. Compound microscope is used to see the objects at large distances.
5. Image formed in a compound microscope is virtual and magnified,
6. To observe celestial objects like moon, stars. etc., we use a telescope.
7. A telescope gives an inverted and diminished image of distant objects.
8. To get sharp images of objects at different distances, the focal length of the eye-lens changes on its own.
9. To get sharp images of objects of different distances. the distance between the lens and the film of a camera is adjusted.
10. Short-sightedness means, that the eye can see the nearby objects clearly and long-sightedness means, that the eye see the distant objects clearly.

Fill in the blanks :

1. The image formed by a magnifying glass is _________________.
2. The image formed by a camera is _________________.
3. The image formed by an eye is _________________.
4. In a simple microscope, object is placed between _________________ and _________________.
5. The image formed in an eye is _________________, whereas image formed in a camera is _________________.
6. Compound microscope is used to see _________________.
7. A telescope is used to see _________________.
8. The least distance of normal vision is _________________.
9. _________________ lens is used to correct myopia and _________________ lens is used to correct hypermetropia.
10. The lens used in a camera is _________________.
11. When both the lenses are used in a telescope, it is called _________________.

What is the 'power of accommodation' of an eye?

What are the common defects of vision of a human eye ? How can these defects be corrected by spectacles?

Write one similarity and one dissimilarity between an eye and a camera.