Question

a straight glass rod appears to bend when placed in a beaker of water, as illustrated in the diagram. what is the best explanation of what is happening? a light travels faster in water than in air b light is refracted as it travels from air to water c light is reflected as it travels from air to water

Explanation:

When light travels from one medium (air) to another (water) with a different optical density, it changes direction, a phenomenon called refraction. This makes the glass - rod appear bent. Light travels slower in water than in air. Reflection would involve light bouncing back, not the bending effect seen here.

Answer:

B. Light is refracted as it travels from air to water