A doctor has prescribed a corrective lens of power +2.5 D to a person. Which of the following is/are correct about the lens?

Question

A doctor has prescribed a corrective lens of power -1-5D- Find the focal length of the lens- Is the prescribed lens diverging or converging-

Toppr Admin · Accepted Answer

Power of lens p-1-5Dp-1f1-5-1f-xA0-f-11-5m-xA0-f-1015m-xA0-f-23m-0-67mFocal length of the lens is-xA0-0-67m-The prescribed lens is converging in nature-

A doctor has prescribed a corrective lens of power $+ 1.5 D$ . Find the focal length of the lens. Is the prescribed lens diverging or converging?

Power of lens $p = + 1.5 D$

$p = \frac{1}{f}$

$1.5 = \frac{1}{f}$

$f = \frac{1}{1.5} m$

$f = \frac{10}{15} m$

$f = \frac{2}{3} m = 0.67 m$

Focal length of the lens is $+ 0.67 m$ .
The prescribed lens is converging in nature.

A doctor has prescribed a corrective lens of power +1.5D. Find the focal length of the lens. Is the prescribed lens diverging or converging?

Power of lens p=+1.5Dp=1f1.5=1f f=11.5m f=1015m f=23m=0.67mFocal length of the lens is +0.67m.The prescribed lens is converging in nature.

A doctor has prescribed a corrective lens of power $+ 1.5 D$ . Find the focal length of the lens. Is the prescribed lens diverging or converging?

Power of lens $p = + 1.5 D$

$p = \frac{1}{f}$

$1.5 = \frac{1}{f}$

$f = \frac{1}{1.5} m$

$f = \frac{10}{15} m$

$f = \frac{2}{3} m = 0.67 m$

Focal length of the lens is $+ 0.67 m$ .
The prescribed lens is converging in nature.