Question 4
Question 4 of 40
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
7. Waves
7.4. Electromagnetic spectrum

recall that wavelengths in the range 400–700 nm in free space are visible to the human eye

22. Quantum physics
22.3. Wave-particle duality

understand the de Broglie wavelength as the wavelength associated with a moving particle