Question

An object placed 4cm from a
Conversing lens Producing a real image 12 cm from the lense then find its magnification focal length and also draw a ray diagram to show a formation of image.

guys pls solve this....
step by step..
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Answer 1

Answer:

u=−4cm

v=12cm (Real image)

(a) m=

u

v

=

−4

12

=−3

(b) Lens formula :

v

1

−

u

1

=

f

1

12

1

−

−4

1

=

f

1

12

1+3

=

f

1

f=3cm

Answer 2

Answer:

u = -4cm v = 12cm ( Real image ) ( a ) m = u V -4 12 = -3 ( b ) Lens formula : V 1 1= f 1 12 1 -4 1 f 1 12 1 + 3 f 1 f = 3cm

Explanation:-

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