A makes an attempt to steal some jewels by breaking open a box, and finds after so opening the box, that there is no jewel in it.

Section 511 IPC 511. Punishment for attempting to commit offences punishable with imprisonment for life or other imprisonment—Whoever attempts to commit an offence punishable by this Code with imprisonment for life or imprisonment, or to cause such an offence to be committed, and in such attempt does any act towards the commission of the offence, shall, where no express provision is made by this Code for the punishment of such attempt, be punished with imprisonment of any description provided for the offence, for a term which may extend to one-half of the imprisonment for life or, as the case may be, one-half of the longest term of imprisonment provided for that offence, or with such fine as is provided for the offence, or with both. (a) A makes an attempt to steal some jewels by breaking open a box, and finds after so opening the box, that there is no jewel in it. He has done an act towards the commission of theft, and therefore is guilty under this section