A community for students.
Here's the question you clicked on:
 0 viewing
AaronAndyson
 one year ago
An object is 25 cm away from a convex len.The height of the image is twice the height of the object.Find it's focal length.
AaronAndyson
 one year ago
An object is 25 cm away from a convex len.The height of the image is twice the height of the object.Find it's focal length.

This Question is Closed

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1Ok, I am gonna tell you a Super Formula for lens \(\sf \boxed{M=\frac{V}{U}=\frac{f}{f+u}=\frac{fv}{f}=\frac{h_i}{h_o}}\)

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1M= magnification, V=image distance u=object distance f=focal length \(\sf h_i~and~h_o\) are image and object height respectively.

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1Note: You need to follow the cartasian coordinate.

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.2Never heard of that :/

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1Heard of what? Cartasian cordinate

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.2Never heard of this Cartasian cordinate

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1Do you know about the sign convension?

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.2To be honest,I don't know a thing about Optics...

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1Ok, why don't you read this http://www.standrews.ac.uk/~bds2/optics/cartesian.html

AaronAndyson
 one year ago
Best ResponseYou've already chosen the best response.2How do I solve this problem?

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1Use the formula m = f/f+u

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1M is magnification. Because the height of the image is twice that of object so the magnification will be 2

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1You need to plug in the values with appropriate sign. that's it 2=f/f+ (25)

Abhisar
 one year ago
Best ResponseYou've already chosen the best response.1Recheck it should be in positive value
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.