The Concave mirror - u-v method
1)What is the relation between focal length(f) and radius of curvature(R) of a concave mirror?
  

2)What is the nature of image when the object is placed between the pole and the focus of a concave mirror?
  

3)Which of the following is a situation which uses spherical mirrors?
  

4)Choose the incorrect statement from the following?
  

5)Name the imaginary line passing through the pole and centre of curvature of a spherical mirror.
  

6)What is the nature of the focus of a concave mirror?
  

7)What is the radius of curvature of a plane mirror?
  

8)A concave mirror of focal length 15 cm creates a real image 45 cm away from its principal axis. The corresponding object is located how far from the mirror?
  

9)Which of the following best describes the image when an object is placed 20 cm in front of a concave mirror of focal length 10 cm?
  

10)If a man’s face is 20 cm in front of concave shaving mirror creating an upright image 2 times as large as the object, what is the focal length of the mirror?