SATHEE: Modern Physics 5 Question 9

Modern Physics 5 Question 9

9. If a star can convert all the He nuclei completely into oxygen nuclei. The energy released per oxygen nuclei is : (Mass of the helium nucleus is $4.0026 a m u$ and mass of oxygen nucleus is $15.9994 a m u$ )

$(2005, 2 M)$

(a) $7.6 M e V$

(b) $56.12 M e V$

(d) $23.4 M e V$

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Answer:

Correct Answer: 9. (a)

Solution:

$4 (_{2} H e^{4}) =_{8} O^{16}$

Mass defect, $Δ m = 4 (4.0026) - 15.9994 = 0.011 a m u$

$∴$ Energy released per oxygen nuclei

$= (0.011) (931.48) M e V = 10.24 M e V$

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Modern Physics 5 Question 9

9. If a star can convert all the He nuclei completely into oxygen nuclei. The energy released per oxygen nuclei is : (Mass of the helium nucleus is 4.0026amu and mass of oxygen nucleus is 15.9994amu )

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9. If a star can convert all the He nuclei completely into oxygen nuclei. The energy released per oxygen nuclei is : (Mass of the helium nucleus is $4.0026 a m u$ and mass of oxygen nucleus is $15.9994 a m u$ )