Polonium emits α -particles and is converted into . This …

Physics Ray Optics Mix MCQ (Single Correct)

Polonium emits α -particles and is converted into . This reaction is used for producing electric power in a space mission. Po 210 has half life of 138.6 days. Assuming an efficiency of 10%. Now choose correct statement(s) Given : M(Po 210 ) = 209.98264 amu ; M( α ) = 4.0026 amu

M(Pb 206 ) = 205.97440 amu ; 1 amu = 931 MeV energy

10 gm Po 210 is required to produce 1.2 × 10 7 Joule energy

Decay constant of Po 210 is 0.005 day –1

Q-value of α -decay process is 8.4 × 10 –13 Joule

None of these

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The correct answer is:

CHECK THE SOLUTION.

(a, b, c)

Q = [M(Po 210 ) –M(Pb 206 )– M( α )]931

λ =

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