Question

If a tree of 5 m is located at a distance if 60 m from a concave mirror of focal length 20 m. What's the size of the image?​

Answer 1

Answer:

Explanation:

Given,

Focal length, f=50cm

Magnification, m=2

m=  

u

v

​  

=2

v=2u

From mirror formula,

f

1

​  

=  

v

1

​  

+  

u

1

​  

 

f

1

​  

=  

2u

1

​  

+  

u

1

​  

 

u=  

2

3f

​  

=  

2

3×50

​  

=75 cm

Object Is placed at 75cm from the mirror.

Answer 2

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