Selected MCQ

Current Question
The uncertainty in position and momentum obeys:
  • A. Exact equality always
  • B. Inequality relation
  • C. Zero uncertainty
  • D. Independent variables
Correct Answer: B
Explanation:
Position and momentum uncertainties are fundamentally constrained.
Related Question 1
Which phenomenon demonstrates quantization of angular momentum?
  • A. Diffraction
  • B. Zeeman effect
  • C. Photoelectric effect
  • D. Reflection
Correct Answer: B
Explanation:
Zeeman splitting arises from quantized angular momentum states.
Related Question 2
The Heisenberg uncertainty principle implies:
  • A. Exact prediction possible
  • B. Simultaneous measurement limits
  • C. Deterministic motion
  • D. No probability
Correct Answer: B
Explanation:
Certain pairs cannot be measured precisely together.
Related Question 3
Which law predicts the effect of concentration on equilibrium position?
  • A. Hess’s law
  • B. Le Châtelier’s principle
  • C. Boyle’s law
  • D. Faraday’s law
Correct Answer: B
Explanation:
Equilibrium shifts to oppose an imposed concentration change.