NEET Atoms and Nuclei questions
14 Physics questions on Atoms and Nuclei as asked in NEET, newest first.
- 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 nth orbit and the particle's speed ν in the orbit…
2025
- De-Broglie wavelength of an electron orbiting in the n = 2 state of hydrogen atom is close to (Given Bohr radius = 0.052 nm)
2025
- Match List I with List II. List I (Spectral Lines of Hydrogen for transitions from): A. n_2 = 3 to n_1 = 2 B. n_2 = 4 to n_1 = 2 C. n_2 = 5 to n_1 = 2 D. n_2 = 6 to n_1 = 2 List II (Wavelengths (nm)): I. 410.2 II. 434.1…
2024
- Given below are two statements: Statement I: Atoms are electrically neutral as they contain equal number of positive and negative charges. Statement II: Atoms of each element are stable and emit their characteristic…
2024
- The half life of a radioactive substance is 20 minutes. In how much time, the activity of substance drops to 1/16 th of its initial value?
2023
- In hydrogen spectrum, the shortest wavelength in the Balmer series is λ. The shortest wavelength in the Bracket series is
2023
- The radius of inner most orbit of hydrogen atom is 5.3 × 10^-11 m. What is the radius of third allowed orbit of hydrogen atom?
2023
- In the given nuclear reaction, the element X is ^22_11Na arrow X + e^+ + ν
2022
- Let T_1 and T_2 be the energy of an electron in the first and second excited states of hydrogen atoms, respectively. According to the Bohr's model of an atom, the ratio T_1 : T_2 is
2022
- A nucleus of mass number 189 splits into two nuclei having mass number 125 and 64. The ratio of radius of two daughter nuclei respectively is
2022
- When a uranium isotope ^235_92U is bombarded with a neutron, it generates ^89_36Kr, three neutrons and :
2020
- The energy equivalent of 0.5 g of a substance is:
2020
- For which one of the following, Bohr model is not valid ?
2020
- The energy required to break one bond in DNA is 10^-20 J. This value in eV is nearly:
2020
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