Most drawer-type drives have a pinhole eject - use a straightened paper clip to eject the disc.

Thanks for reply, did what you said. drawer opened but disc is still inside!!

The only way that could have happened is if the disc slid over the outside of the drive.  You'll have to remove the drive - if you post the system model, someone can direct you to the instructions for doing that.

Ok thanks, the model is Dell Inspiron N5010.

Instructions for removing the Optical Drive are here

 thanks for reply.