An "X" Is Marked on the Bottom of a Glass

question 27

Multiple Choice

An "X" is marked on the bottom of a glass container.A microscope is adjusted so that it is focused on the "X." A liquid is now poured into the glass to a depth of 6.00 cm.If the microscope has to be backed up by a distance of 1.50 cm to refocus on the "X," then calculate the refractive index of the liquid.

• A)1.25
• B)4.00
• C)1.33
• D)0.75
• E)3.00