If a powerful laser turns on and off for 1 second, will the light continue

A few days ago, a question was asked with a picture like, 

"If a powerful laser turns on and off for 1 second, will the light continue ...?"

I apologize for answering this question in the form of a post.

I tried to give the answer below, I am sorry for the mistake and I am requesting to correct it.

Light is a wave ray. If we throw the torch light into the sky and turn it off again, that light wave will continue indefinitely until it is interrupted.

For example, if you turn off the torch light from Earth to space and turn it off again, and if I or someone else is a light minute away from Earth, then if that light ray is not obstructed, then it is one in our eyes. Will be visible after a minute, similarly if we are one light hour away or one light day or one light year away, that ray will be visible to our eyes after one light hour, one light day, or one light year respectively.

However, since light is a kind of wave, the ray will gradually fade over time.

Another example is that if you see a 60 watt bulb burning from a distance of 500 meters, the amount of light that is visible to your eyes will be more visible when you are present near the bulb. Or if you approach the bulb from a distance of 500 meters, you will gradually see the brightness of the bulb increase.

And if it is obstructed, it will come back to the earth or not. In order to say whether it comes or not, first of all it has to be understood whether there is a reflector in the place where it is obstructed or not ...... because reflection is not created without reflector.

And even if there is a reflector, the light from there will return to the earth, but it will return in a very weak state. Since light is also a type of wave.

Note: It is important to note that the visibility of the light will depend on how far the reflector is located.

Now if you say, "There is no reflector on the moon, then how does light spread from the moon ..."?

The answer is that the light of the sun falls on the moon and that light illuminates the space of the moon exactly as much as we see the moon. And the moon is a smaller but much larger object than the sun and the earth, so the sun has enough light to illuminate it, but neither I nor you have a torch light.

Another example is that you can easily see an object 200 meters away with your torch, but you cannot see it by lighting a match.