1.

Major and minor axis of an ellipse are 8 and 6 respectively. Initially it touches positive x and y axis and line joining the two focii is parallel to x-axis. It then rotates in anti-clockwise sense, always touching both the positive co-ordinate axes, and the rotation stops when the line joining their focii is vertical for the first time. C is centre of ellipse and O is origin, then:

Answer»

Locus of C is the complete PORTION of `x^2+y^2=25` lying Ist quadrant
Locus of C is PART of the CIRCLE `x^2+y^2=100`
Total distance covered by C is `5tam^(-1)((7)/(24))`
Initial and FINAL positions of C LIES on the curve `xy=12`

Answer :C::D


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