NEET 2025 | Atoms and Nuclei Question 4 | Physics

NEET 2025

MCQ (Single Correct Answer)

-1

A particle of mass $m$ is moving around the origin with a constant force $F$ pulling it towards the origin. If Bohr model is used to describe its motion, the radius of the $n^{\text {th }}$ orbit and the particle's speed $v$ in the orbit depend on $n$ as

$r \propto n^{2 / 3} ; v \propto n^{1 / 3}$

$r \propto n^{4 / 3} ; v \propto n^{-1 / 3}$

$r \propto n^{1 / 3} ; v \propto n^{1 / 3}$

$r \propto n^{1 / 3} ; v \propto n^{2 / 3}$

NEET 2024 (Re-Examination)

MCQ (Single Correct Answer)

-1

The spectral series which corresponds to the electronic transition from the levels $$n_2=5,6, \ldots$$ to the level $$n_1=4$$ is

Pfund series

Brackett series

Lyman series

Balmer series

NEET 2024 (Re-Examination)

MCQ (Single Correct Answer)

-1

Water is used as a coolant in a nuclear reactor because of its

high thermal expansion coefficient

high specific heat capacity

low density

low boiling point

NEET 2024 (Re-Examination)

MCQ (Single Correct Answer)

-1

Some energy levels of a molecule are shown in the figure with their wavelengths of transitions. Then :

NEET 2024 (Re-Examination) Physics - Atoms and Nuclei Question 5 English

$$\lambda_3>\lambda_2, \lambda_1=2 \lambda_2$$

$$\lambda_3>\lambda_2, \lambda_1=4 \lambda_2$$

$$\lambda_1>\lambda_2, \lambda_2=2 \lambda_3$$

$$\lambda_2>\lambda_1, \lambda_2=2 \lambda_3$$

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