A) \[1:3:5\]
B) \[1:2:3\]
C) \[1:4:9\]
D) \[1:5:6\]
Correct Answer: A
Solution :
According to equation of motion distance covered in nth second. \[{{S}_{n}}=u+\frac{a}{2}(2n-1)\] \[{{S}_{n}}=\frac{a}{2}(2n-1)\] \[(\because \,\,u=0)\] \[\therefore {{s}_{1}}:{{s}_{2}}:{{s}_{3}}\] \[=\{2(1)-1\}:\{2(2)-1\}:\{2(3)-1\}\] \[=1:3:5\]
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