is this usage correct ?
"light is out " when power cut off
"i am cross with you " after quarrel
pls telle me
thank you
Yes, they're Ok.
Just note that "I'm cross with you" is a little old-fashioned.
Some people say "The lights are out" when there is a power cut. There are various phrases in BrE which fit:
The power's off.
The electricity's off.
There's a power cut.
In BrE, "I'm cross with you" is fine. It doesn't have to be after an argument. You can be cross with someone because they have simply done something to annoy you, or because they didn't do something you asked them to etc. It's just a milder form of "angry".