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Aadarsh
Group Title
The magnification of a magnifying lens of focal length 5 cm is :(final image is at infinity)
a) 1
b) 2
c) 3
d) 5
 2 years ago
 2 years ago
Aadarsh Group Title
The magnification of a magnifying lens of focal length 5 cm is :(final image is at infinity) a) 1 b) 2 c) 3 d) 5
 2 years ago
 2 years ago

This Question is Closed

salini Group TitleBest ResponseYou've already chosen the best response.1
wat si the type of lens that magnifies ur imge and also produces a virtual image? answer this question then wat is the ray diagram for getting image at infinity with that type of lens? wat is lens formula relating f,u,v i can get my v from that? wat is magnification? in terms of u and v u are near the answer once u have ansered all these questions
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
The lens must be a convex lens. The object is at focus.
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
\[1/v  1/u = 1/f\]
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
Here, v = 0
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
Also, m = v/u
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
But, I am not getting the answer.
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
put down the ray diagram for me when image is at infinity for convex lens
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
Just one minute. Here is the diagram.
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
dw:1333555806014:dw
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
@salini didi, Now say what to do.
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
yeah so? u=?
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
object disatnce=?
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
then? tell me how do i proceed?
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
m = f/(f+u) = 5/(5+5) = 0.5?????
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
m=v/u u never used taht?
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
But how to do? Please say in detail the complete steps.
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
u know that formula?
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
U say akka. PLease.
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
i forgot for lenses tahts y ia m asking u
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
Ohhhhhhh!!! Can u please post the details tomorrow? I have to go now. Bye.
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
ok bye! see pg.182 of 10th ncert text book
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
Okay, will look and say tomorrow.
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
Its given that, m = v/u = h1 / h2
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
yeah so u know u, find V using lens formula then apply u/v to find magnification(the extent to which the image is magnified w.e.to object) the key here is taht u=focal length that u will come to know ONLY WHEN U DRAW THE RAY DIAGRAM!
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
But, v = 0 na?
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
1/f=1v1/u 1/v=1/f+1/u by sign convention f=5 u=5
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
@salini didi, then, m = f/(f+u) = 5[5 + (5)] = 5/0?????
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
v = 0, rite?
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
U learnt ssign convention?>
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
yeah. U try and see. This problem uses some different formula. Then only we can get it.
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
i will get back to you later after searching abt this problem
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
U r correct didi!!!!!! Cheers!!!!!!! thanks for the solution.
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
:) we learn nothing...........there is so much to learn further
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
Oooooooooo. But, it is a continous process. Being happy is also a continuous process. So, be happy!!!!!!:P
 2 years ago

salini Group TitleBest ResponseYou've already chosen the best response.1
!!!!!!!!!!!!!!!!!! i dont know wat to type :)
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
Hehehehheheheheh!!!!!!!!!! Crazy Sister!!!!!!!!!!!!!
 2 years ago

Aadarsh Group TitleBest ResponseYou've already chosen the best response.0
Can't stop laughing!!!!!!!!!!!!!!!!!!!!
 2 years ago
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