**Question:** A neutron moving with velocity v collides with a stationary 𝛼 − 𝑝𝑎𝑟𝑡𝑖𝑐𝑙𝑒.The velocity of the neutron after the collision is

(A) -\dfrac{3v}{5}

(B) \dfrac{3v}{5}

(C) \dfrac{2v}{5}

(D) -\dfrac{2v}{5}

**Answer:** Option (A)

**Solution:**

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**Question:** A neutron moving with velocity v collides with a stationary 𝛼 − 𝑝𝑎𝑟𝑡𝑖𝑐𝑙𝑒.The velocity of the neutron after the collision is

(A) -\dfrac{3v}{5}

(B) \dfrac{3v}{5}

(C) \dfrac{2v}{5}

(D) -\dfrac{2v}{5}

**Answer:** Option (A)

**Solution:**