Evaluate why wave theory alone was insufficient.

Quick explanation

Evaluate why wave theory alone was insufficient

• This point belongs to Wave-particle duality, especially Discovery of photoelectricity.
• You need to be able to evaluate why wave theory alone was insufficient.
• The key ideas to know are wave, evaluate, and alone.
• Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.