Question

1. A man stands 2m away from a concave mirror of 1m focal length. Calculate the distance of

the image of the man from the pole of the mirror. Will the image formed be real or virtual? Also,

calculate the image magnification and find the image size and its nature.​

Answer 1

Answer:

Step-by-step explanation:

Given: Concave mirror  f=−10cm     and        m=−2      height of object=h

Solution: Since m=  

u

−v

​  

=2=  

h

hi

​  

 

v=−2u  

So, from mirror formula

v

1

​  

+  

u

1

​  

=  

f

1

​  

 

v

u

​  

=  

f

u

​  

−1

m=  

u

−v

​  

=  

f−u

f

​  

 

Since m=−2=  

f−u

f

​  

 

−2f+2u=f

u=  

2

3f

​  

=−15cm

u=−15cm    And   m=−2=  

u

−v

​  

 

So  v=−30cm