Optical Instruments I: Optical Element

AI Thread Summary
The discussion revolves around matching seven diagrams of optical elements with their corresponding types: Plane Mirror, Concave Mirror, Convex Mirror, Converging Lens, and Diverging Lens. The user initially provided their answers but expressed uncertainty about their accuracy, particularly regarding diagram #4, where the image is not inverted. Other participants pointed out this detail, suggesting it could indicate a specific type of optical element. The conversation highlights the importance of analyzing image characteristics, such as inversion, to correctly identify optical elements. Overall, the thread emphasizes collaborative problem-solving in understanding optical instruments.
OsDaJu
Messages
17
Reaction score
0

Homework Statement


In the 7 diagrams below, the solid arrow represents the object and the dashed arrow the image. The rectangle shows the position of an SINGLE OPTICAL ELEMENT. Match each diagram with the appropriate optical element.

1)http://img190.imageshack.us/img190/5176/92585723.gif
2)http://img200.imageshack.us/img200/2803/55254956.gif
3)http://img200.imageshack.us/img200/359/25673305.gif
4)http://img23.imageshack.us/img23/2958/88364885.gif
5)http://img190.imageshack.us/img190/4506/39696062.gif
6)http://img190.imageshack.us/img190/4718/81323910.gif
7)http://img190.imageshack.us/img190/7931/72002101.gif

My options are:
Plane Mirror
Concave Mirror
Convex Mirror
Converging Lens
Diverging Lens

Homework Equations


Ray Diagrams

The Attempt at a Solution


1) Concave Mirror
2) Plane Mirror
3) Diverging Lens
4) Converging Lens
5) Concave Mirror
6) Converging Lens
7) Converging Lens

I can't figure out where I'm making my mistake. Can anyone help me?
 
Last edited by a moderator:
Physics news on Phys.org
Hi OsDaJu,

OsDaJu said:

Homework Statement


In the 7 diagrams below, the solid arrow represents the object and the dashed arrow the image. The rectangle shows the position of an SINGLE OPTICAL ELEMENT. Match each diagram with the appropriate optical element.

1)http://img190.imageshack.us/img190/5176/92585723.gif
2)http://img200.imageshack.us/img200/2803/55254956.gif
3)http://img200.imageshack.us/img200/359/25673305.gif
4)http://img23.imageshack.us/img23/2958/88364885.gif
5)http://img190.imageshack.us/img190/4506/39696062.gif
6)http://img190.imageshack.us/img190/4718/81323910.gif
7)http://img190.imageshack.us/img190/7931/72002101.gif

My options are:
Plane Mirror
Concave Mirror
Convex Mirror
Converging Lens
Diverging Lens

Homework Equations


Ray Diagrams

The Attempt at a Solution


1) Concave Mirror
2) Plane Mirror
3) Diverging Lens
4) Converging Lens
5) Concave Mirror
6) Converging Lens
7) Converging Lens

I can't figure out where I'm making my mistake. Can anyone help me?

I have not looked at all of them closely, but notice in #4 that the image is not inverted. Does that help?
 
Last edited by a moderator:
Thank you, I missed that one.
 
Sure, glad to help!
 
I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
Thread 'Collision of a bullet on a rod-string system: query'
In this question, I have a question. I am NOT trying to solve it, but it is just a conceptual question. Consider the point on the rod, which connects the string and the rod. My question: just before and after the collision, is ANGULAR momentum CONSERVED about this point? Lets call the point which connects the string and rod as P. Why am I asking this? : it is clear from the scenario that the point of concern, which connects the string and the rod, moves in a circular path due to the string...
Thread 'A cylinder connected to a hanging mass'
Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...

Similar threads

Back
Top