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On a horizontal frictionless frozen lake, a girl (36 kg) and a box (9 kg) are connected to each other by means of a rope. Initially they are 20 m apart. The girl exerts a horizontal force on the box, pulling it towards her. How far has the girl traveled when she meets the box >
(A) 10 m
(B) Since there is no friction, the girl will not move
(C) 16 m
(D) 4m

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KVPY Other Question

A juggler tosses a ball up in the air with initial speed u. At the instant it reaches its maximum height H, he tosses up a second ball with the same initial speed. The two balls will collide at a height The following three objects (1) a metal tray, (2) a block of wood, and (3) a woolen cap are left in a closed room overnight. Next day the temperature of each is recorded as T1, T2 and T3 respectively. The likely situation is
option
(A) T1 = T2 = T3
(B) T3 > T2 > T1
(C) T3 = T2 > T1
(D) T3 > T2 = T1