Practice de BROGLIE'S EXPLANATION OF BOHR'S SECOND POSTULATE OF QUANTISATION - 12.6 | 12. ATOMS | CBSE 12 Physics Part 2
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12.6 - de BROGLIE'S EXPLANATION OF BOHR'S SECOND POSTULATE OF QUANTISATION

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What does Bohr's second postulate state about angular momentum?

πŸ’‘ Hint: Think about how many specific values it can take.

Question 2

Easy

Define wave-particle duality.

πŸ’‘ Hint: What do we mean when we say particles can behave like waves?

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What does the quantisation of angular momentum imply?

  • It can take any value
  • Only integer multiples of h/2Ο€
  • It equals zero

πŸ’‘ Hint: Remember Bohr's formulation reveals specific allowed values.

Question 2

True or False: de Broglie's hypothesis supports the idea that electrons have both wave and particle characteristics.

  • True
  • False

πŸ’‘ Hint: This concept is critical in quantum physics.

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Challenge Problems

Push your limits with challenges.

Question 1

A 1 MeV electron is moving in a circular orbit. Calculate its de Broglie wavelength and the radius of its orbit if it has an angular momentum of nh/2Ο€ with n = 1.

πŸ’‘ Hint: Use kinetic energy relation KE = eV to find p, relating it to wavelength thereafter.

Question 2

Explain why the concept of standing waves is crucial for understanding electron orbits in multi-electron atoms.

πŸ’‘ Hint: Consider how interference might occur among multiple waves in more complex systems.

Challenge and get performance evaluation