Wordpress : Need to set zoom level in google embedded map iframe

I resolved my problem , here i am adding some screen-shots,

I opened the page ,and

then it opened like this

Now go to address bar i.e

and find out lat long and Z associated with lat longyou may change this Z as you want and refresh the page

or

After this go to cog button on top left side i.e

after this it will open a side bar like this

then look for share or embed map and click on that it will open

then

now copy iframe code from here and use.

Thats it. It will work for every one.