Question

The focal length of small concave mirror is 1.5 cm . In order to use this concave mirror as a dentis's mirror, the distance of tooth from the mirror should be

Answer 1

Hello friend

Here goes your answer

● Concave mirror usually forms a real and an inverted image.

● For a dentist, the mirror he uses should give him an erect and a magnified image of the tooth.

● For a concave mirror, if the object is placed between the focus and the pole of the mirror then the image will be magnified and will be erect.

◆ So the dentist should place the mirror less than 1.5 cm from the tooth. Thus the image formed will be erect, magnified and virtual.

Hope it helps!☺