AIPMT 2008 | Atoms and Nuclei Question 81 | Physics

If M(A; Z), M_p and M_n denote the masses of the nucleus $${}_Z^AX,$$ proton and neutron respectively in units of u (1 u = 931.5 MeV/c²) and BE represents its bonding energy in MeV, then

M(A, Z) = ZM_p + (A $$-$$ Z)M_n $$-$$ BE

M(A, Z) = ZM_p + (A $$-$$ Z)M_n + BE/c²

M(A, Z) = ZM_p + (A $$-$$ Z)M_n $$-$$ BE/c²

M(A, Z) = ZM_p + (A $$-$$ Z)M_n + BE

AIPMT 2007

MCQ (Single Correct Answer)

-1

The total energy of electron in the ground state of hydrogen atom is $$-$$ 13.6 eV. The kinetic energy of an electron in the first excited state is

6.8 eV

13.6 eV

1.7 eV

3.4 eV.

AIPMT 2007

MCQ (Single Correct Answer)

-1

Out of Syllabus

If the nucleus $${}_{13}^{27}Al$$ has a nuclear radius of about 3.6 fm, them $${}_{32}^{125}Te$$ would have its radius approximately as

9.6 fm

12.0 fm

4.8 fm

6.0 fm

AIPMT 2007

MCQ (Single Correct Answer)

-1

A nucleus $${}_Z^AX$$ has mass represented by M(A, Z). If M_p and M_n denote the mass of proton and neutron respectively and B.E. the binding energy in MeV, then

B.E. = [ZM_p + (A $$-$$ Z)M_n $$-$$ M(A, Z)]c²

B.E. = [ZM_p + AM_p $$-$$ M(A, Z)]c²

B.E. = M(A, Z) $$-$$ ZM_p $$-$$ (A $$-$$ Z)M_n

B.E. = [M(A, Z) $$-$$ ZM_p $$-$$ (A $$-$$ Z)M_n]c²

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