Question

1. maximum focal length of eye lens is____
2. relational b/w focal length, object distance and image distance is____
3. for myopic person maximum focal length is ___
4. when an object is placed beyond far point for myopic person image is formed _____ on retina
5.____ lens is suggested for myopic person
6. what change may get in myopic person's cilinary muscle
7. myopia is also called as what
pls help in physics plssss​

Answer 1

1. 2.5 cm
2. $\frac{1}{f} = \frac{1}{v} - \frac{1}{u}$
3. -D
4. infront of
5. concave
6. The effect of ciliary muscle contraction or relaxation on the focussing power of the lens. When the ciliary muscle is contracted, the lens becomes more spherical – and has increased focussing power.
7. near sightedness

HOPE THIS ANSWER HELPS YOU....

Answer 2

Explanation:

1) 2.5 cm and 2.27 cm

2) Starting from a large value, as the object distance decreases (i.e., the object is moved closer to the lens), the image distance increases; meanwhile, the image height increases. ... As the object distance approaches one focal length, the image distance and image height approaches infinity.

3) A person with a myopic eye cannot see objects beyond 1. 2 m distinctly. What should be the type of the corrective lens used to restore proper vision

4) For a myopic eye with the near point as 5m, if any object is kept beyond this distance, the image is not formed on the retina. Instead, the image is formed in front of the retina as shown in the figure.

5) Concave lens

6) Due to this eye can increase or decrease focal length of the lens in order to see either close or distant objects. In order to see nearby objects the ciliary muscles contract and lens become thick and focal length is decreased which helps to see nearby objects.

7) Nearsightedness

Hopes it help you❤️❤️