Question

solve the equation by graphically​

Answer 1

Answer:

 

v

1

​  

+  

u

1

​  

=  

f

1

​  

...........(1)

So, u=−27cm

Concave mirror have negative focal length.

f=−18cm

Putting the values in (1),

v

1

​  

+  

−27

1

​  

=  

−18

1

​  

 

We get , v=−54cm

Also,

Magnification =  

h  

1

​  

 

h  

2

​  

 

​  

=  

u

−v

​  

 

7.0

h  

2

​  

 

​  

=−  

−27

−54

​  

 

h  

2

​  

=−14.0cm

Image will be real and inverted and will be of size 14 cm.

Step-by-step explanation: