1

IIT-JEE 1984

Fill in the Blanks
Four person K, L, M, N are initially at the four corners of a square of side d. Each person now moves with a uniform speed v in such a way that K always moves directly towards L, L directly towards M, M directly towards N, and N directly towards K. The four person will meet at a time _____________.

Answer

$${d \over v}$$
2

IIT-JEE 1983

Fill in the Blanks
A particle moves in a circle of radius R. In half the period of revolution its displacement is ________ and distance covered is _________.

Answer

2R, $$\pi R$$

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