AIPMT 2004 | Atoms and Nuclei Question 99 | Physics

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AIPMT 2004

MCQ (Single Correct Answer)

-1

The Bohr model of atoms

Assumes that the angular momentum of electrons is quantized.

Uses Einstein's photoelectric equation.

Predicts continuous emission spectra fror atoms.

Predicts the same emission spectra for all types of atoms.

AIPMT 2004

MCQ (Single Correct Answer)

-1

If in a nuclear fusion process the masses of the fusing nuclei be m₁ and m₂ and the mass of the resultant nucleus be m₃, then

m₃ = m₁ + m₂

m₃ = $$\left| {{m_1} - {m_2}} \right|$$

m₃ < (m₁ + m₂)

m₃ > (m₁ + m₂)

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

AIPMT 2003

MCQ (Single Correct Answer)

-1

An electron is moving round the nucleus of a hydrogen atom in a circular orbit of radius r. The Coulomb force $$\overrightarrow F $$ between the two is

$$K{{{e^2}} \over {{r^2}}}\widehat r$$

$$ - K{{{e^2}} \over {{r^3}}}\widehat r$$

$$K{{{e^2}} \over {{r^3}}}\widehat r$$

$$ - K{{{e^2}} \over {{r^2}}}\widehat r$$

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