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Standard X

Physics

Nuclear Fission

Critical mass...

Question

Critical mass of $_{92} U^{235}$ is nuclear fission is :

1 to 100 g

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100 to 1000 mg

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1 to 100 kg

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1 to 100 u

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Solution

The correct option is C 1 to 100 kg
The minimum amount of fissionable material that is required to support a self-sustaining chain reaction under a given set of conditions is called critical mass.

For $_{92} U^{235},$ it is $1.0 k g$ to $100 .0 k g .$

Hence, option C is correct.

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Similar questions

Q. The amount of

U^{235}

in kg which is to be used per hour in a nuclear reactor of capacity

100

(

E = 200 M e V / f i s s i o n

)

Q. If power of nuclear reactor is

100

watt then rate of nuclear fission is:-

Q. When a slow neutron is captured by a

_{92}^{235} U

nucleus, a fission energy released is

200 M e V

. If power of nuclear reactor is

100 W

then rate of nuclear fission is:

_{92} U^{235}

undergoes nuclear fission as follows

n +

_{92} U^{235} \to

_{42} M o^{98} +

_{54} X e^{136} + 2 n

Energy released in fission of

1

gm of

_{92} U^{235}

is (masses of n,

_{92} U^{235}

_{42} M o^{98}

, and

_{54} X e^{136}

are

1.0087

235.0439, 97.9054

and

135.9170

(all in amu) respectively)

Q. About

180 MeV

of usable energy is released in the neutron induced fissioning of a

_{92} U^{235}

nucleus. If the reactor using

_{92} U^{235}

as fuel continuously generates

100 MW

power. The time it will take for

1 kg

of the uranium to be consumed in days .(integer only)

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Critical mass of 92U235 is nuclear fission is :

The correct option is C 1 to 100 kgThe minimum amount of fissionable material that is required to support a self-sustaining chain reaction under a given set of conditions is called critical mass. For 92U235, it is 1.0 kg to 100.0 kg.Hence, option C is correct.

Critical mass of $_{92} U^{235}$ is nuclear fission is :

The correct option is C 1 to 100 kg
The minimum amount of fissionable material that is required to support a self-sustaining chain reaction under a given set of conditions is called critical mass.

For $_{92} U^{235},$ it is $1.0 k g$ to $100 .0 k g .$

Hence, option C is correct.