Question

explain why a test tube immersed at a certain angle in a tumbler of water appears to have a mirror surface from a certain viewing position

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Answer 1

Answer:

When rays of light travel through water strikes the water glass interface of test tube at an angle which is more than critical angle for water. Then the light ray suffers total internal reflection. ... So, the test tube appears as it has mirror surface.#viashu

Answer 2

Explanation:

1. The surface aur the test tube separates water and air.
2. As light tries to enter air in the test tube(rarer medium),it undergoes total internal reflection bouncing back to water from the surface of the test tube giving it a shiny mirror like surface.