An \alpha-particle of mass 6.4 \times 10^{-27} {\kg} and charge 3.2 \times 10^{-19} {\C} is situated in a uniform electric field of 1.6 \times 10^5 {\V} {\m}^{-1}. The velocity of the particle at the end of 2 \times 10^{-2} {\m} path when it starts from rest is

Correct Answer is : 4√2×105ms−1

4 \sqrt{2} \times 10^5 {\ms}^{-1}

2 \sqrt{3} \times 10^5 {\ms}^{-1}

KCET 2009 Physics Solved Paper

Question : 32 of 60

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An α-particle of mass 6.4×10−27‌kg and charge 3.2×10−19C is situated in a uniform electric field of 1.6×105Vm−1. The velocity of the particle at the end of 2×10−2m path when it starts from rest is

8×105ms−1
16×105ms−1
4√2×105ms−1
2√3×105ms−1

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