"Screening" of the light emitted by three point light sources

Examine the light emitted by the three LED bulbs by screening it with a one-slit and a three-slit system. Answer the questions.

Combining light from several light sources

Light emitted from multiple light sources will join and not 'interfere' with each other. For example, if two identical lamps illuminate a piece of paper from identical distances, the paper will appear twice as bright.

Instructions for the experiment

Light from three point sources
Explain why, in such an experiment, the three beams on the flashlight do not converge, as happened when using a single LED lamp in the previous experiment.
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The experiment speaks!

The following question is the first one that a student can answer by doing an experiment. However, he or she may not realise or want to do so, for example, if it is quite simple, there may be no need to. Sometimes this is not the case, and sometimes it is just a matter of checking one's thinking. The next test can be set up quite easily.

What picture would we see if we placed three slits in the light of three LED bulbs. Draw a diagram and plot the rays of light that are important to explain the result of the experiment.
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If we lift the torch to one side and screen the light from the three LED bulbs vertically in the experiment with one slit, we will see only one beam on the paper. Explain this phenomenon.
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What can you say about it?

Let's keep the result in mind and go for the big light sources!