Question

6. When an object is placed at a distance of 15 cm from a concave mirror, its image 15 o c a
10 cm in front of the mirror. Calculate the focal length of the mirror.
7. An object 3 cm high is placed at a distance of 8 cm from a concave mirror which produces a
virtual image 4.5 cm high :
a) What is the focal length of the mirror ?
b) What is the position of image ?
c) Draw a ray-diagram to show the formation of image.
8. A converging mirror forms a real image of height 4 cm of an object of height
1 cm placed 20 cm away from the mirror:
a) Calculate the image distance.
b) What is the focal length of the mirror ?
9. An object 3 cm high is placed at a distance of 10 cm in front of a converging mirror of focal
length 20 cm. Find the position, nature and size of the image formed.
10. A dentist's mirror has a radius of curvature of 3 cm. How far must it be placed from a small
dental cavity to give a virtual image of the cavity that is magnified five times ?
11. A concave mirror produces three times enlarged virtual image of an object placed at 10 cm in
front of it. Calculate the radius of curvature of the mirror.
12. How far should an object be placed from the pole of a converging mirror of focal length 20
cm to form a real image of the size exactly the size of the object ?​

Answer 1

dude don it on your own feet