Question

the focus distance of a convex is 20cm calculate its capacity
​

Answer 1

Answer:

f=20cm

and v=40cm

v

1

​  

−  

u

1

​  

=  

f

1

​  

 

⟹  

40

1

​  

−  

u

1

​  

=  

20

1

​  

 

⟹  

u

1

​  

=  

40

−1

​  

 

⟹u=−40cm

magnification m=  

u

v

​  

=  

−40

40

​  

=−1

Hence, the image formed is real , inverted and of same size as that of the object.

Explanation:

Answer 2

Answer:

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