Question

A concave mirror has a radius of curvature of 1.2 m and a person stands in a front of it at a distance of 40 cm from the mirror where is the image of the person formed?​

Answer 1

Answer:

Explanation:

ANSWER

Since radius of curvature is 1.2m i.e. 120cm.

Therefore focal length=−60cm

From mirror formula

v

1

​  

+  

u

1

​  

=  

f

1

​  

 

−35

1

​  

+  

u

1

​  

=  

−60

1

​  

 

u

1

​  

=  

35

1

​  

−  

60

1

​  

 

u

1

​  

=  

420

12−7

​  

 

u=84cm

Image height=  

84

12

​  

×35=5cm

Thus image height will be 5 cm.