Log In Start studying!
Answers without the blur. Sign up and see all textbooks for free! Illustration

Q.46

Expert-verified
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 992

Answers without the blur.

Just sign up for free and you're in.

Illustration

Short Answer

A microscope is focused on a black dot. When a -cm-thick piece of plastic is placed over the dot, the microscope objective has to be raised cm to bring the dot back into focus. What is the index of refraction of the plastic?

The index of refraction of the plastic is

See the step by step solution

Step by Step Solution

Step 1: Given information

We are given that the thickness of plastic piece is

and the microscope objective has to be raised to bring the dot back into focus. We have to find refractive index of plastic.

Step 2: Simplify

As we know,

Where,

refractive index of medium of object

refractive index of medium of observer

distance of object

distance of image

Now, according to question

The distance of black dot of plastic piece (object) is

The distance of image is

Refractive index of air is

Most popular questions for Physics Textbooks

Icon

Want to see more solutions like these?

Sign up for free to discover our expert answers
Get Started - It’s free

Recommended explanations on Physics Textbooks

94% of StudySmarter users get better grades.

Sign up for free
94% of StudySmarter users get better grades.