Question

A dentist observes and checks the patient’s teeth using a mirror with an 8 cm radius. In order for the hole to be seen clearly by the doctor, what is the distance between the patient’s teeth and the mirror? A. less than 4 cm in front of a concave mirror B. less than 4 cm in front of a convex mirror C. more than 4 cm in front of the concave mirror D. more than 4 cm in front of the convex mirror

Answer 1

Answer:

The dental doctor uses a concave mirror. Erect , virtual and enlarged image can be obtained using the mirror. Such images are formed when the object is kept in between the main focus and pole of a concave mirror. So the maximum distance between the mirror and the teeth must be in 8 cm to view the teeth clearly