DIRECTIONS. The answer to each of the following questions is a single digit integer, ranging fro...

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DIRECTIONS. The answer to each of the following questions is a single digit integer, ranging from 0 to 9 . If the correct answers to the question numbers A, B, C and D (say) are 4, 0,9 and 2 respectively, then the correct darkening of bubbles should be as shown on the side :
(1) (1) (1) (1)
(3) (3) (3) (3)
(4) (4) (4)
(5) (5) (5)
(6) (6) (6)
(7) (7) (7) (7)
(8) (8) (8)
(9) (9) (9) (9)
A block is released from top of a smooth inclined plane. It reaches the bottom of the plane in \( \sqrt{2} \mathrm{~s} \). The time taken (in second) by the body to cover 1st half of inclined plane is:
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