Question

The focal length of a normal eye-lens is about
A. 1 mm
B. 2 cm
C. 25 cm
D. 1 m​

Answer 1

Answer:

C. 25 cm is the correct answer

Answer 2

EXPLAINATION
The focal length of a normal eye lens is about 2 cm because distance between eye lens and retina is approximately 2 cm. So, when parallel rays are coming they form image at focus and to make image at retina focal length should be about 2 cm.
Answer 2cm





Hope it’s helpful