Concave mirrors are used by dentists to examine the teeth of a patient. The concave mirror forms a magnified image of the teeth.
1. What type of image is formed?
a. Real
b. Virtual
2. An object, 8.0 cm in size, is placed at 45.0 cm in front of a concave mirror of focal length 15.0 cm. At what distance from the mirror should a screen be placed in order to obtain a sharp image?
a. 37 cm
b. 37.5 cm
c. 38 cm
d. 38.5 cm
3. The object is placed between C and F. Then what will be the position of the image formed by a concave mirror?
a. Beyond C
b. At infinity
c. Behind the mirror
d. At C
4. Of the object is placed between P and F, then what will be the nature of image formed by concave mirror ?
a. Real and inverted
b. Virtual and erect
5. Of the object is placed at infinity, then what will be the size of image formed by the concave mirror?
a. Same size
b. Enlarged
c. Highly diminished
d. None of these
