The medium is dense if the speed of light ____

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Detailed Solution

The medium is dense if the speed of light decreases.
A medium is said to be optically rarer if light moves through it more quickly. An optically transparent medium is one that allows light to pass through it without any difficulty or obstruction. An optically denser medium is one in which the speed of light is lower than usual.
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The light ray experiences a change in its path as it travels through one medium and then another. The incident ray changes its path here in the diagram, moving from the air to the glass and then back to the air after passing through the glass slab. Depending on how fast light travels in a given medium compared to other mediums, we can divide it into two categories.
● An optically rarer medium has a higher light speed.
● Optically denser medium: The speed of light is slower in this medium.

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