Why Does Moving the Microscope Objective Create a Second Image?

AI Thread Summary
Moving the microscope objective creates a second image due to the optical properties of the system involving refraction and reflection. When the objective is shifted, light from the scratch at point A can still reach the objective after reflecting off the plate, resulting in a second sharp image. The unchanged distance D implies that the light path remains consistent despite the movement of the objective. The discussion highlights the complexities of light behavior in optical systems, particularly in relation to refractive indices and distances. Understanding these principles is crucial for grasping why multiple images can occur in microscopy.
Numen
Messages
2
Reaction score
0

Homework Statement


I have a transparent plate (call the thickness t and refractive index n), it has a scratch at a point A. A microscope objective (M, positive) images the point A in A' at a distance D from the objective. If we move M a certain distance d down (without changing focus, meaning D is unchanged), there will be another sharp image of the scratch.

How come?

Homework Equations



Not needed?

The Attempt at a Solution



I was thinking that it might be some reflection on the objective that reflects the light back to the plate and back to the objective at the same point as before it was moved, and then refracted towards A'. I'm not sure if I understand the problem correctly... I think it is suggesting a second image somewhere else?
 
Physics news on Phys.org
Ok, I tried illustrating the problem. Please check the attachment (hope it helps).
 

Attachments

  • p2.jpg
    p2.jpg
    4.2 KB · Views: 471
Thread 'Voltmeter readings for this circuit with switches'

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
View full post »
Thread 'Correct statement about a reservoir with an outlet pipe'

Thread 'Correct statement about a reservoir with an outlet pipe'

The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
View full post »

Similar threads

Ray optics: velocity of image reflected off a moving mirror
Replies
5
Views
1K
Microscope Optics: questions and calculations
Replies
12
Views
1K
Number of Images Formed from Reflection & Refraction
Replies
3
Views
1K
Is the Solution for Rotation of Spherical Mirrors Incorrect?
Replies
16
Views
2K
Could the Image from the First Mirror Be Real for the Second Mirror?
Replies
7
Views
2K
A problem involving thin film interference
Replies
2
Views
2K
Imaging resolution for a microscope and eye
Replies
5
Views
2K
Inserting thick lenses into a thin lens system and deducing values
Replies
1
Views
2K
Position of the object and image in this optics problem
Replies
10
Views
2K
The focal length of a microscope eyepiece
Replies
1
Views
3K

Hot Threads

Recent Insights

Back
Top