A) 1 s
B) 2 s
C) 4 s
D) 16 s
Correct Answer: B
Solution :
\[S=ut+\frac{1}{2}a{{t}^{2}}=0+\frac{1}{2}a{{t}^{2}}\] Hence \[t\propto \sqrt{S}\] i.e., if S becomes one-fourth then t will become half i.e., 2 sec
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