is it possible to install iso image of ubuntu on multiple computers using one pc
plz tell me the way

1. I wonder if you realize that there is a policy against posting the same issue in multiple forums here.

2. Several ways. Mine follow.
a. If you do not mean concurrent install, you can just burn to a USB device or CD and move it from one machine to another until they are all installed.
b. If you mean concurrent install, set up for network install and install all of them over the network.

2.a. is obvious. 2.b. is complex, but instructions are available on the internet. You can do a network install using a small usb or cd image to start, or using PXE boot install from your TFTP/dhcp server.