Question

A dentist uses a small mirror attached to a thin rod to examine one of your teeth. When the tooth is 1.2 cm in front of the mirror, the image it forms is 9.25 cm behind the mirror. find (a) focal length of the mirror, (b) magnification of the image, (c) Draw neat ray diagram, (d) what kind of mirror is this?

PLEASE REMEMBER TO HELP WITH PART C, PLEASE DRAW THE RAY DIAGRAM.

Problem 12 A dentist uses a small mirror attached to a thin rod to examine one of your teeth. When the tooth is 1.2 cm in front of the mirror, the image it forms is 9.25 cm behind the mirror, find (a) focal length of the mirror, (b) magnification of the image, (c) Draw neat ray diagram, (d) what kind of mirror is this?

Answer 1

Solution' Given! Uz -1.2cm V = 9.25cm (Q) From Mirror formula; 11 +. + V sol tot I 9.25 의 + 1 - -1.2 I -I 9.25 12 의f 9.25*1-2 12- 9:25 fa 11.1 -0.05 & fa -1.378 cm ma (6) magnification. mu ma - 9.25cm -1:2 cm 여 m= 7.7083 ---- 7:71cm (c) Ray diagram considering height of object 1cm. -- А. B' FO K-1-2cm-F I have considered -2.7 Sim object height 1 cm & then plotted. d'agram is nearly on Seale. mirror. (1) This is a Coneare