Question

Whatis the image distance in case of concave mirror if the object distance is 32 cm?It is given that the focal length of the mirror is 16 cm. State the nature and the size of the image which is formed.​

Answer 1

Answer:

f =-19.2cm

Explanation:

Image is inverted  so magnification must be negative. 

m=objectheightimageheight=2−3=−1.5

Also  object distance is u=−32cm

We know m=−uv

−1.5=−−32v

Position of object from lens is v=−48cm

We know 

f1=v1+u1 

f1=−481+−321 

f=−19.2cm