Question

a 10 cm high object is placed at a distance of 30cm from a convex lense of focal length 10 cm draw a ray diagram and find the position,size and nature of image formed​

Answer 1

Answer:

Explanation:

Object distance   u=−36 cm

Focal length of concave mirror    f=−12 cm

Using mirror formula :      

v

1

​  

+  

u

1

​  

=  

f

1

​  

 

Or    

v

1

​  

+  

−36

1

​  

=  

−12

1

​  

 

⟹ v=−18 cm

Magnification    

h  

o

​  

 

h  

i

​  

 

​  

=  

u

−v

​  

 

Or      

10

h  

i

​  

 

​  

=  

−10

−(−18)

​  

 

⟹ h  

i

​  

=−18 cm

Image formed is real and inverted.