How are LEDs similar to incadescent light bulbs? How are they diffrent?

Me to solve all the questions on the sheet attached

Which of these describe conduction transfer of heat between two objects that are touching transfer of heat by the actual movement of war matter the process in which energy is imitated by one of the object transmitted through space and absorbed by another a process in which energy is released by the molecules breaking apart

According to newton’s first law of motion, which force is expected to cause a body to accelerate?