The photographs show the different cable is used for the clothes iron and the lamp suggest why the wires in the clothes iron cable or thicker than the wires in the lamp cable

A piece of thin wire has higher resistance than a piece of thicker wire with the same length, which means that it's harder for electric current to move through it. That's why it glows—as the battery pushes current through the filament inside the bulb, the high resistance turns the electrons' energy into heat.

Explanation:

sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.