Question

the average length of the base of an adult human is 20 CM the image length of an height produced by a shaving mirror of three times magnification will be​

Answer 1

Average length of base of adult human = 20 cm.

Now, the shaving mirrors produces magnification of 3.

• We know that shaving mirrors are concave mirror and the object (i.e. face) is placed in between the focus and the pole of the mirror.

• This produces a virtual, erect and magnified image.

• As per question, magnification will be +3.

So, image height = 20 × 3 = 60 cm.

$\star$ Hope It Helps.