I want to turn on an LED 1 sec after power is supplied to it and the LED should then be on until power is disconnected. Pls provide the schematics if possible
With those base resistor values I doubt it will get close. In the end the transistor needs to be in saturation.
I don't know if the OP is wanting fading or not, which is the circuit I pointed to. If just a delay a 555 or other Schmitt Trigger is probably the ways to go, as it addresses the fundamental gain issue.