Question

A coin put in an empty cup not visible before become visible after some water is poured into the cup explain why

Answer 1

refraction allows you to observe the coin the image you are seeing is apparent position of it refraction is due to water

Answer 2

$\large\boxed{\fcolorbox{blue}{yellow} {Answer}}$

1. When the cup is empty, the rays of light coming from the coin are obstructed by the side of the cup.

2. Hence, the coin is not visible when seen from one side of the cup.

3. When water is poured in the cup, the rays of light coming from the coin trave from water (denser medium) to air (rarer medium).

4. Hence, they bend away from the normal on refraction.

Therefore, the coin appears to be raised and becomes visible when observed from one side of the cup.

Hope it helps!

$<marquee> Mark as brainliest ✔️</marquee>$