AIPMT 2004 | Atoms and Nuclei Question 101 | Physics

AIPMT 2004

MCQ (Single Correct Answer)

-1

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 2003

MCQ (Single Correct Answer)

-1

Out of Syllabus

The mass number of a nucleus is

always less than its atomic number

always more than its atomic number

sometimes equal to its atomic number

sometimes less than and sometimes more than its atomic number

AIPMT 2003

MCQ (Single Correct Answer)

-1

The mass of proton is 1.0073 u and that of neutron is 1.0087 u (u = atomic mass unit). The binding energy of $${}_2^4$$ He is
(Given helium nucleus mass $$ \approx $$ 4.0015 u.)

0.0305 J

0.0305 erg

28.4 MeV

0.061 u

AIPMT 2003

MCQ (Single Correct Answer)

-1

Out of Syllabus

A sample of radioactive element has a mass of 10 g at an instant t = 0. The approximate mass of this element in the sample after two mean lives is

1.35 g

2.50 g

3.70 g

6.30 g

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