Magnifying power of simple microscope is 6, when image is formed at distance of distinct vision, the focal length of simple microscope is :

Question

Magnifying power of simple microscope is 6- when image is formed distance of distinct vision- the focal length of simple microscope is -15cm25cm5cm4-16cm

Toppr Admin · Accepted Answer

Given-m-6 magnification of simple microscopeD-25cm Least distance of distinct vision-The magnification of simple microscope-m-1-Df6-1-25cmf5-25cmff-25cm5f-5cmThe correct option is C-

Magnifying power of simple microscope is 6, when image is formed at distance of distinct vision, the focal length of simple microscope is :
$15 c m$
$25 c m$
$5 c m$
$4.16 c m$

Given,

$m = 6$ magnification of simple microscope

$D = 25 c m$ Least distance of distinct vision.

The magnification of simple microscope,

$m = 1 + \frac{D}{f}$

$6 = 1 + \frac{25 c m}{f}$

$5 = \frac{25 c m}{f}$

$f = \frac{25 c m}{5}$

$f = 5 c m$

The correct option is C.

Magnifying power of simple microscope is 6, when image is formed at distance of distinct vision, the focal length of simple microscope is :15cm25cm5cm4.16cm

Given,m=6 magnification of simple microscopeD=25cm Least distance of distinct vision.The magnification of simple microscope,m=1+Df6=1+25cmf5=25cmff=25cm5f=5cmThe correct option is C.

Magnifying power of simple microscope is 6, when image is formed at distance of distinct vision, the focal length of simple microscope is :
$15 c m$
$25 c m$
$5 c m$
$4.16 c m$

Given,

$m = 6$ magnification of simple microscope

$D = 25 c m$ Least distance of distinct vision.

The magnification of simple microscope,

$m = 1 + \frac{D}{f}$

$6 = 1 + \frac{25 c m}{f}$

$5 = \frac{25 c m}{f}$

$f = \frac{25 c m}{5}$

$f = 5 c m$

The correct option is C.