NUMERICAL

Asked by  | 31st May, 2009, 06:06: PM

Expert Answer:

Using lens formula:

 

1/v-1/u=1/f

1/v +1/14=-1/21

1/v=-1/21-1/14=-5/42

v=-42/5=-8.4

Magnification of image is : v/u=-8.4/-14=I/3

I=1.8m

Hence image is virtual,erect and formed on same side of lens as the object.

We have:

Answered by  | 31st May, 2009, 07:59: PM

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