Match the following:
Column - I | Column - II |
(i) Number of values of a for which the common chord of the circles x2 + y2 = 8 and (x – a)2 + y2 = 8 subtends a right angle at the origin is | [A] 4 |
(ii) A chord of the circle (x–1)2 + y2= 4 lies along the line y = 22 (x–1). The length of the chord is equal to | [B] 2 |
(iii) The number of circles touching all the three lines 3x + 7y = 2, 21x + 49y=5 and 9x + 21y=1 are | [C]0 |
(iv) If radii of the smallest and largest circle passing through the point and touching the circle x2 + y2 – y – 2 = 0 are r1 and r2 respectively, then the mean of r1 and r2 is | [D]1 |
Text Solution
Verified by Experts(i) [B]; (ii) [A]; (iii) [C]; (iv) [D]
Ans.
(i) [B]
(ii) [A]
(iii) [C]
(iv) [D]
Sol.
(i) 2
(ii) 4
(iii) 0
(iv) 1
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