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NCAT Practice Test - Practice Test - Chemistry - Atomic Structure - 2026 Quiz

Attempt 10 MCQs on NCAT Practice Test - Practice Test - Chemistry - Atomic Structure (Year 2026) | Quiz 2

11. What is the wavelength of a photon with energy 3.313×10⁻¹⁹ J?



12. How does photon energy relate to frequency?



13. What is the value of Planck's constant?



14. Which color of light has photons with higher energy?



15. What is the energy in eV of a photon of violet light (λ=400 nm)?



16. How many photons per second does a 100 W light bulb emit if it produces light of wavelength 500 nm?



17. Which phenomenon directly supported the concept of photons?



18. What phenomenon did Planck's quantum theory initially explain?



19. What is the rest mass of a photon?



20. Which quantum number determines the size and energy of an orbital?



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Instructions: Select one answer per question. After submitting, you will see your score, correct answers, and explanations.

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