Question

an object was 4 CM in height is placed at 15 CM in front of concave mirror of focal length 10 cm at what distance from the mirror should a screen be placed to obtain a sharp image of the object calculate the height of the image

Answer 1

Answer:

Height ~4cm

Focal length=-10cn

U=-15cm

Now apply mirror formula

1/f=1/v+1/u

1/-10+1/-15=1/v

-3-2/30 =1/v

Now, v=-6cm

Now about magnification

Formula,m=h’/h=-v/u

h’/4= - (-6/-15)

h’= -4 into -6/-15. Therefore h'=-1.6cm

Explanation: