Question

please answer the question​

Answer 1

Answer:

due to conversion of mechanical energy into electrical energy

Explanation:

as the bicycle is pedaled the wheel starts rotating, as the wheel rotates the generator starts rotating there produces electricity which passes to the bulb and it glows

as fast you rotate as electricity produces as bulb glows brighter this the physics involved

Answer 2

I am sure you have heard of this law

Energy is neither created or destroyed

its get transferred to another form

Like that

The genrator used in bicycle convert mechanical energy into electrical energy

So when you paddle faster the mechanical energy which is produced become more or greater

The more mechanical energy given to genrator the more electricity it produce thats why bulb grow brighter