A nucleus ᴢXᴬ emits an α- particle with velocity v. The recoil speed of the daughter

⇦

⇨

A nucleus ᴢXᴬ emits an α- particle with velocity v. The recoil speed of the daughter nucleus is

Options

(a) A-4/4v
(b) 4v/A-4
(c) v
(d) v/4

Correct Answer:

4v/A-4

Explanation:

According to the question, zXᴬ → z-₂ Yᴬ⁻⁴ + ₂He⁴

Let the recoil speed of daughter nucleus is ʋ’. By the law of conservation of momentum, we have Initial momentum = Final momentum

0 = (A – 4)ʋ’ + 4ʋ

(A – 4) ʋ’ = -4ʋ ⇒ ʋ’ = 4ʋ / (A – 4)

Related Questions:

1. When 1 kg of ice at 0⁰C melts to water at 0⁰C, the resulting change in its entropy
2. In nuclear fusion, two nuclei come together to form a large nucleus.
3. The p-type semiconductor is
4. Small drops of the same size are charges to V volt each. If n such drops coalesce
5. Two charges each equal to 2µ C are 0.5m apart. If both of them exist inside vacuum

Topics: Radioactivity (83)
Subject: Physics (2479)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends