NEET Physics: Atoms and Nuclei — MCQ Test 1

Q6. What is the total energy of an electron in the \( n = 4 \) state of a hydrogen atom? (Use \( E_n = -\frac{13.6}{n^2} \, \text{eV} \))

Q7. In the Bohr model, how many de Broglie wavelengths fit into the circumference of the \( n = 6 \) orbit?

Q8. An electron in a hydrogen atom transitions from \( n = 3 \) to \( n = 1 \). What is the energy of the emitted photon? (Use \( E_n = -\frac{13.6}{n^2} \, \text{eV} \))

Q9. In Bohr’s model, what is the state of a hydrogen atom when its electron is in the \( n = \infty \) orbit?

Q10. What characterizes the emission line spectrum of a hydrogen atom?

NEET Physics — Atoms and Nuclei

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Which of the following statements is incorrect about Rutherford’s nuclear model?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Physics preparation, focusing specifically on the chapter Atoms and Nuclei. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Following, Statements, Incorrect, Rutherford, Difference, and Hydrogen.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. Which of the following statements is incorrect about Rutherford’s nuclear model?

  • A. Electrons maintain stable orbits without radiating
  • B. Positive charge is concentrated in the nucleus
  • C. Most of the atom is empty space
  • D. Nucleus is small and dense

Q2. What is the energy difference between the \( n = 5 \) and \( n = 3 \) states in a hydrogen atom? (Use \( E_n = -\frac{13.6}{n^2} \, \text{eV} \))

  • A. 1.89 eV
  • B. 0.66 eV
  • C. 0.97 eV
  • D. 2.86 eV

Q3. In Bohr’s model, what defines the stationary orbits of an electron?

  • A. Continuous energy levels
  • B. Quantized angular momentum
  • C. Random electron paths
  • D. Uniform charge distribution

Q4. What is the wavelength of the photon emitted when an electron drops from \( n = 2 \) to \( n = 1 \) in a hydrogen atom? (Use \( h = 6.6 \times 10^{-34} \, \text{J·s} \), \( c = 3 \times 10^8 \, \text{m/s} \), 1 eV = \( 1.6 \times 10^{-19} \, \text{J} \))

  • A. \( 6.56 \times 10^{-7} \, \text{m} \)
  • B. \( 4.86 \times 10^{-7} \, \text{m} \)
  • C. \( 1.89 \times 10^{-7} \, \text{m} \)
  • D. \( 1.21 \times 10^{-7} \, \text{m} \)

Q5. What does the de Broglie hypothesis suggest about the electron in Bohr’s model?

  • A. Electrons are stationary
  • B. Electrons emit continuous radiation
  • C. Electrons have no wave properties
  • D. Electrons form standing waves

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