The near point and far point of a person...

The near point and far point of a person are 40cm and 250cm, respectively. Determine the power of lens he/she should use while reading a bool kept at distance 25cm away from it,

2.5 D

5.0 D

1.5 D

3.5 d

Text Solution

Verified by Experts

The correct Answer is:

Similar Questions

Explore conceptually related problems

The near and far points of a person are at 40 cm and 250cm respectively. Find the power of the lens he/she should use while reading at 25cm . With this lens on the eye, what maximum distance is clearly visible?

The near point and the far point of a child are at 10 cm and 100 cm. If the retina is 2.0 cm behind the eye-lens, what is the range of the power of the eye-lens?

For a person near point of vision is 100cm. Then the power of lens he must wear so as to have normal vision, should be

A person has a minimum distance of distinct vision as 50cm. The power of lenses required to read a book at a distance of 25cm is

The focal length of objective and eye lens of a microscope are 4 cm and 8 cm respectively. If the least distance of distinct vision is 24 cm and object distance is 4.5 cm from the objective lens, then the magnifying power of the microscope will be

If a person can sees clearly at a distance of 100 cm, then find the power of leris used to see object at 40 cm.

The near point of a person is 75 cm. In order that he may be able to read book at a distance 30 cm. The power of spectacles lenses should be

A person's near point is 50 cm and his far point 3m . Power of the lenses he requires for (i) reading and (ii) for seeing distant stars are

The far point of a myopic person is 80 cm in front of the eye. What is the nature and power of the lens required to correct the problem?

The near point and far point of a person are 40cm and 250cm, respectively. Determine the power of lens he/she should use while reading a bool kept at distance 25cm away from it,

Text Solution

Similar Questions

Recommended Questions