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Q.

The nuclear cross section is measured in ‘barn’. It is equal to

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a

$10^{- 30} m^{2}$

b

$10^{- 28} m^{2}$

c

$10^{- 20} m^{2}$

d

$10^{- 14} m^{2}$

answer is C.

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Detailed Solution

Barn is standard unit of nuclear cross section. It is used to measure very small area.

1 barn = $10^{- 28} m^{2}$

Therefore, option C is correct.

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