Question

what help us see a stream of light entering through a gap in curtain of a room​

Answer 1

Answer:

it is a dust particle that reflect the light and when this reflected light reaches to our eye we are able to see that light entering through the gap in curtain of a room

Answer 2

Tyndall effect

Explanation:

• Tyndall effect is the process of scattering of beam of light from a colloidal suspension.
• The particles present in the colloidal suspension reflect the light which makes the beam of light visible.
• The stream of sunlight entering through the gap of curtain passes through the dust particles in the room and scatter those particles and appear as a single beam of light making the dust particles visible to the human eye. This is an example of tyndall effect.

Learn more about tyndall effect:

Tyndal effect define and two properties of tyndall effect​: https://brainly.in/question/11367757