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Yogita Ingle 6 years, 6 months ago
Shock Therapy was a process of transformation of an authoritarian socialist system to a democratic capitalist system.
1. The transition was inspired by the World Bank and International Monetary fund in Russia, central Asia, and Eastern Europe.
2. The therapy was a sudden change that transformed the state-controlled economy into a free market economy.
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Gaurav Seth 6 years, 6 months ago
The formula is a relation between the object distance u , inmage distance v and the focal length from the pole of the concave mirror. The formula is valid for the images in convex mirror and even for the images in lens.
We consider the image formed by aconcave mirror whose focal length is f and whose radius of curvature is r = 2f.
Let P be the pole of the concave mirror. Let P, F , C be the pole, focucal point , and centre of curvature along principal axis . So, PC = 2PF , as r = 2f.
Let AB be a vertically standinding object beyond C on the principal axis.
Then the ray starting from B parallel to principal axis incident on the mirror at D reflects through the focus F. Let the reflected ray be CFB' .
The another ray starting from B through the centre C incident on the mirror at E retraces its path by reflection being normal to the mirror.
Now BE and DF produced meet at B'.
Now drop the perpendicular from B' to PC to meet at A'.
Drop the perpendicular from D to PC to meet at G.
Now PF = f , the focal length. PA = u object distance from the mirror. PA' = v the image distance.
Now consider the similar triangles ABC and A'BC.
AB/AB' = AC/ A'C =( PU-PC)(PC-PA') = (u-2f)/((2f-v).....(1)
Consider the similar triangles DFG and A'B'F.
DG/A'B' = PF/PA' PF/(PA'-PF)= f/(v-f)... (2)
DG = AB. So (2) could be rewritten as:
AB/A'B' + f/v ....................(3).
From (2) and (3), LHS being same , we can equate right sides.
(u-2f)/(2f-v) = f/(v-f).
(u-2f)(v-f) = (2f-v)f.
uv-2fv -fu +2f^2 = 2f^2 -fv
uv = fu +fv
Dvide by uvf;
1/f = 1/v+1/u.
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Gaurav Seth 6 years, 6 months ago
Anatropous ovule :
a completely inverted ovule turned back 180 degrees on its stalk. ovule - a small body that contains the female germ cell of a plant; develops into a seed after fertilization.
function :
A flower is a plant's reproductive structure. One major part is the carpel, the female reproductive structure that includes the ovary . Inside the ovary is an ovule that, when fertilized, will develop into a seed. A seed contains an embryo (baby plant), the endosperm (food for the embryo), and a seed coat.
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Shubham Sharma 6 years, 6 months ago
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