Page 142 - DECO401_MICROECONOMIC_THEORY_HINDI

O;f"V vFkZ'kkL=k osQ fl¼kar

uksV 4- pki yksp fofèk (Arc Elasticity Method)
pki yksp dher ifjorZu dh vkSlr vuqfØ;k (Responsiveness) dk ,d eki gS tks ,d ek¡x
oØ ij nks fcanqvksa osQ chp osQ Hkkx dks iznf'kZr djrk gSA ,d ek¡x oØ ij nks fcanqvksa osQ chp osQ Hkkx
dks pki dgk tkrk gSA (An Arc is the portion between two points on a demand curve)A
fp=k 6-20 esa DD ek¡x oØ ij A vkSj C fcanqvksa osQ chp dk Hkkx pki gSA tc eè; fcanq ;k vkSlr dher
rFkk ek=kk osQ iz;ksx djus ls tks yksp izkIr gksrh gS mls pki dher yksp dgk tkrk gSA

fp=k 6-20

Y
D Arc Elasticity
Price (Rs.) P A ARC

P
1 C D

O X
Q Q 1
Quantity

okVlu osQ vuqlkj] ^^pki dher yksp ek¡x oØ pki osQ eè; fcanq dh dher yksp gSA** (Arc
elasticity is the elasticity at the mid point of an arc of a demand curve. –Wastson.)
iQxwZlu osQ 'kCnksa esa] ^^pki dher yksp ,d ek¡x oØ ij nks fcanqvksa osQ chp vkSlr yksp dk ,d
eki gSA** (Arc elasticity is a measure of the average elasticity between two points on
the demand. —Ferguson)A

lw=k (Formula)

dher yksp osQ lw=k osQ vuqlkjμ
P Δ Q
E d = Q × Δ P

;g Li"V gS fd ΔQ = Q – Q [kjhnh xbZ ek=kk esa ifjorZu vkSj ΔP = P – P dher esa ifjorZu
1 1
ijarq P vkSj Q osQ ewY; D;k gSa\ pw¡fd pki AC osQ fofHkUu fcanqvksa ij P rFkk Q osQ fofHkUu ewY; gksrs gSa
blfy;s buosQ fdlh ,d fuf'pr ewY; dk iz;ksx djuk vko';d ugha gSA ijaijk osQ vuqlkj P vkSj Q osQ
nks ewY;ksa osQ vkSlr dk iz;ksx fd;k tkrk gS rkfd
Q + Q ) P+ P )
( 1 ( 1
Q= rFkk P = A
2 2
vr% ek¡x dh pki dher yksp fuEufyf[kr lw=k dh lgk;rk ls vk¡dh tkrh gSμ
ek=kk essa ifjorZu (Change in Quantity) dher esa ifjorZu (Change in Price)
E = —————–——————————— + ———————————————
d
1 1
ek=kkvksa dk tksM+ (Sum of Quantities) dherksa dk tksM+ (Sum of Price)
2 2

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