Question

An object is placed 8 cm away in front of a concave mirror of focal length 5 cm. Find out the position of image and magnification. Find out whether the image is inverted or erect by drawing the ray diagram.​

Answer 1

Answer:

Explanation:

According to mirror's formula,

f=−5cm,u=−8cm  

−5=  

−8+v

−8v

​  

 

−5(−8+v)=−8v  

40−5v=−8v  

40=−3v  

∴3v=−40  

v=  

3

−40

​  

=−13.34cm  

Features of images : Beyond C, big, real, inverted

Magnification m=  

h  

o

​  

 

h  

i

​  

 

​  

=  

u

−v

​  

 

m=  

u

−v

​  

=(  

−8

−13.34

​  

)=1.67