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Atoms & Nuclei
NEET Physics • 10 questions • Free on ExamBattle
Practice Questions
Q1
In Bohr's model, the radius of nth orbit of hydrogen is proportional to:
- A. n
- B. n²
- C. 1/n
- D. n³
Q2
The energy of electron in nth orbit of hydrogen is Eₙ = −13.6/n² eV. The ionization energy is:
- A. 3.4 eV
- B. 13.6 eV
- C. 6.8 eV
- D. 27.2 eV
Q3
The Balmer series of hydrogen spectrum lies in:
- A. Infrared region
- B. Visible region
- C. Ultraviolet region
- D. X-ray region
Q4
The nuclear radius is proportional to:
- A. A
- B. A^(1/3)
- C. A²
- D. √A
Q5
The energy equivalent of 1 atomic mass unit (u) is approximately:
- A. 1 MeV
- B. 931.5 MeV
- C. 0.511 MeV
- D. 938 MeV
Q6
In Geiger-Marsden alpha scattering experiment, most alpha particles:
- A. Were deflected back
- B. Passed through with little or no deflection
- C. Were absorbed by gold foil
- D. Were deflected at 90°
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