Question

Q1.By which instrument could you create a beam of light?
Q2.How could you show that light is completely or partially passing through the substance?
Q3. How could the passage of light be seen clearly i.e. in dark or light?
Q4.What do you see in the beam of light coming to darker room through a hole?
Q5. How could we see the ray of light?
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Answer 1

Answer:

(1 ) optical interferomerter

(2) tarnculent objects

(3) light shadwo reflection

(4) tyndall effect

(5) light ray pass through the corner and lenes then focus on the retina

Hope it helps you....