A student focusses a sharp image of sun using a spherical mirror on a sheet of paper. which starts to burn after some time.
Which of the following statement/statements about the mirror is/are correct?
(a) It is concave spherical mirror
(b) It has positive focal length
(c) It is a converging mirror
1
Both (b) and (c)
2
Both (a) and (c)
3
Both (a) and (b)
4
(a), (b) and (c)