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Q.

Statement: I  Let Pi and Pi1 be the feet of perpendicular drawn from foci S,S1 on a tangent to an ellipse whose length of semi major axis is 20 and i=110SPiS1Pi1=1960, the value  of eccentricity is 34
Statement :II  The product of perpendiculars from foci to any tangent of an ellipse x2a2+y2b2=1 is b2. 

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a

S1 and S2 and true, S2 is correct explanation of S1

b

S1 and S2 and true, S2 is not correct explanation of S1

c

S1 and S2 are false

d

S1 is false and S2 is true

answer is D.

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Detailed Solution

Given  a=20 and 

i=110SPiS1Pi1=1960,

10b2=1960b=14e=204400

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