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Physics Class 12
Solutions to CBSE Sample Paper - Physics Class 12

What is the nuclear radius of 125 Fe ,if that of 27 Al is 3.6 fermi?.



From the relation R = R 0 A 1/3 , where R 0 is a constant and A is the mass number of a nucleus

R Fe /R Al = (A Fe /A Al )

= (125/27)

R Fe = 5/3 R Al

=5/3 x 3.6

= 6 fermi

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.