The radius of {R} of a nucleus of massnumber A can be estimated by the formula{R}= (1.3 \\times10^{-15} ) {A}^{1 \/ 3} {m} . It follows that the massdensity of a nucleus is of the order of: ( {M}_{\text{prot.}} ≅{M}_{\text{neut. }} ≃ 1.67 \\times10^{-27} {kg} ) [3 Sep 2020 Shift 2]

Correct Answer is : 1017 kg m−3

JEE Mains 03-Sep-2020 Shift 2 Solved Paper

Section: Physics

Question : 2 of 75

Marks: +1, -0

The radius of R of a nucleus of massnumber A can be estimated by the formula R=(1.3×10−15) A1∕3 m. It follows that the massdensity of a nucleus is of the order of:
(Mprot.≅Mneut. ≃1.67×10−27 kg)

[3 Sep 2020 Shift 2]

1024 kg m−3
103 kg m−3
1017 kg m−3
1010 kg m−3

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