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Physics - Modern Physics Question with Solution | TestHub

PhysicsModern PhysicsMiscellaneousEasy2 minPYQ_2020

PhysicsEasysingle choice

Two nuclei $A$ and $B$ are isotonic with mass numbers $15$ and $16$ respectively. If $A$ contains $7$ protons, then the number of protons in $B$ would be

Options:

Answer:

Solution:

$A_{1} = 15$

$A_{2} = 16$

$N_{1} = N_{2} = N$

$Z_{1} = 7$

$A_{1} = Z_{1} + N$

$A_{2} = Z_{2} + N$

$15 = 7 + N$ .......(i)

$16 = Z_{2} + N$ .......(ii)

Equation (ii), (i)

$Z_{2} - 7 = 1$

$Z_{2} = 1 + 7$

$Z_{2} = 8$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Modern PhysicsSubtopic:Miscellaneous

⏱ 2mℹ️ Source: PYQ_2020

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