AIPMT 2005 | Atoms and Nuclei Question 96 | Physics

AIPMT 2005

MCQ (Single Correct Answer)

-1

The total energy of an electron in the first excited state of hydrogen atom is about $$-$$ 3.4 eV. Its kinetic energy in this state is

3.4 eV

6.8 eV

$$-$$ 3.4 eV

$$-$$ 6.8 eV

AIPMT 2005

MCQ (Single Correct Answer)

-1

Energy levels A, B and C of a certain atom corresponding to increasing values of energy i.e. E_A < E_B < E_C. If $$\lambda $$₁, $$\lambda $$₂ and $$\lambda $$₃ are wavelengths of radioations corresponding to transitions C to B, B to A and C to A respectively, which of the following relations is correct?

$${\lambda _3} = {\lambda _1} + {\lambda _2}$$

$${\lambda _3} = {{{\lambda _1}{\lambda _2}} \over {{\lambda _1} + {\lambda _2}}}$$

$${\lambda _1} + {\lambda _2} + {\lambda _3} = 0$$

$${\lambda _3}^2 = {\lambda _1}^2 + {\lambda _2}^2$$

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 2004

MCQ (Single Correct Answer)

-1

Out of Syllabus

The half life of radian is about 1600 years. Of 100 g of radium existing now, 25 g will remain unchanged after

4800 years

6400 years

2400 years

3200 years

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