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Fill in the blanks with appropriate items : This binding energies per nucleon for `._(1)H^(2) ` and `._(2)H^(4)` are ` 1.1MeV and 7.0 MeV` respectivel

Monjur Alahi

Fill in the blanks with appropriate items :
This binding energies per nucleon for `._(1)H^(2) ` and `._(2)H^(4)` are ` 1.1MeV and 7.0 MeV` respectively. The energy released when two deuterons fuse to form a helium nucleus is __________.


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Salim Ahmed Kawsar

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Correct Answer - `23.6 MeV`
`2 ._(1)H^(2) rarr ._(2)He^(4)`
`Delta E=rArr(2+2)(7)-2(1+1)(1.1)`
`rArr 23.6 ` MeV

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If the binding energy per nucleon in `._(3)Li^(7)` and `._(2)He^(4)` nuclei are respectively `5.60` MeV and `7.06` MeV, then the ebergy of proton in t

Correct Answer - B In a nuclear reaction the energy remains conservest `P + ._(3)^(7)Li rarr 2(._(2)^(4)He)` energy of proton `+ 7(5.60) = 2(4 xx 7.06)` `rArr` energy of `= 17.28...

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What will be the energy change in the following nuclear reaction, `X^(40) + ._(0)n^(1) rarr Y^(30)+Z^(11)` if binding energy per nucleon of X,Y and Z

Correct Answer - B Since B.E./Nucleon of Reactants is high energy will be absorbed, Net energy absorbed =(Bond energy of Reactant nucleus )-(Total bond energy of Product Nuclei) ` =(40 xx...

2 Answers 1 views
Fill in the blanks with appropriate items : The number of ` alpha` and `beta ` - particles emitted, when the following nuclear transformation takes pl

Correct Answer - 8,6 `._(92)^(238)X rarr. _(82)^(206)Y + x alpha + y alpha` `._(92)^(238)X rarr ._(82)^(206) Y + x(._(2)He^(4))+y(._(-1)^(0)e)` Comparing mass no. `238 rArr 206 + 4x +0y` `x=8 i.e. 8...

2 Answers 1 views
Fill in the blanks with appropriate items : The half-life period of radioactive element _______ minute if 75% of it disintegrates in 40 min.

Correct Answer - 20 min. `t_(3//4)=2t_(1//2)=40 =2t_(1//2) rArr t_(1//2)=20 min`

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Fill in the blanks with appropriate items : Symbol is needed to complete the nuclear equation `._(29)^(63)Cu (P, ....). _(29)^(62)Cu`

Correct Answer - D(Deuterium) `._(29)^(63)Cu + ._(1)^(1) P rarr ._(29)^(62)Cu +._(1)H^(2)` Deuterium `rarr (._(1)H^(2))`

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Fill in the blanks with appropriate items : When `._(c)^(a) X` changes to `._(d)^(b) Y` number if ` alpha` and `beta` particle emitted respectively ar

Correct Answer - `alpha=(a-b)/(4) ; beta = d+((a-b))/(2)-c` `._(c)^(a)M rarr ._(d)^(b)N+x(._(2)He^(4))+y(._(-1)e^(0))` `a=b+4x+0y` `(a-b)/(4)=x " " ..........(1)` `c=d+2x-y` `c-d-(a-b)/(2)=-y` `y=d+((a-b))/(2)=c`

2 Answers 1 views
Fill in the blanks with appropriate items : The `alpha` -activity of `1 gm .^(226) Ra. (t_(1//2)=1620 ` year) is _______ dpm.

Correct Answer - `2.16 xx 10^(12) dpm` `A=N lambda =((1)/(226)xxN_(A)) xx(0.693)/(1620 xx12 xx24xx30xx60)` `2.16 xx 10^(-12)` d.p.m

2 Answers 1 views
True or False Statements : In the nuclear reaction `X^(200) rarr A ^(110)+B^(90)`. If the binding energy per nucleon for X, A and B is 7.4 MeV, 8.2.Me

Correct Answer - [T] `DeltaE=E(B.E.)_(P)-E(B.E.)_(R)` `rArr (110xx8.2+90xx8.2)-(200xx7.4)=160` MeV

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The binding energy per nucleon of `._(3)^(7) Li` and `._(2)^(4)He` nuclei are `5.60` MeV and `7.06` MeV, respectively. In the nuclear reaction `._(3)^

Correct Answer - D The binding energy for `""_(1)H^(1)` is around zero and also not given in the question so we can igonor it `Q=2(4xx7.06)-7xx(5.60)=(8xx7.06)-(7xx5.60)` `=56.48-39.2=17.28MeV~=17.3 MeV`

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The binding energy of deuteron is `2.2` MeV and that of `._(2)^(4)He` is `28` MeV. If two deuterons are fused to form one `._(2)^(4)He`, th `n` the en

Correct Answer - A `2 "Deuteron rarr ._(2)^(4)He` `Q = "BE of Product" - "BE of reactant"` `= [28 MeV - 2(2.2 MeV)]` `= [28-4.4 ] = 23.6 MeV`

2 Answers 1 views

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